This will probably not be a popular opinion, and I hope that I am not in breach of any guidelines here.
I feel strongly that this has been an attempt to make things look like suicide.
Here's my speculations;
-As a female with a sister, there is no way I would go to bed naked, especially if planning on not waking up. The thought of being found naked for most of us would be humiliating. Plus, what if one of us had to get up? Most sisters wouldn't walk around in each other's presence naked.
If my sister or I had a pact, that would indicate they were close; if they were close, they would be in bed together with each other's comfort. You would not want your sister to go alone.
- These were mentally strong girls; to come from SA, a completely oppressive country, on their own and forge a life here takes strong minds. I don't think they would not have made it here, they would have completed their pact before making it here, and they would not go through all of this to end it all. Police are remaining tight-lipped on their visa status- I suspect if they were seeking asylum, this would be kept quiet since SA would be watching every media response; if they were seeking asylum and it was made public, this may put their family at home at risk safety-wise.
- I think if they may have been being funded by a wealthy person (as a form of charity)- I can't remember if I am confusing the case of the HK Saudi sisters or not, but I think I remember them being funded by a wealthy businessman as a form of charity. It would not be far-fetched for these girls to have funding from a charity where a wealthy person gave them x amount of funds or regular funding as charity to help them. I think this would be more likely than the family funding them.
- I don't think they would have been on good terms with their family. I imagine they would have been considered to have brought shame to their family by firstly leaving SA, but leaving their family and not fulfilling their roles as daughters culturally should. I suspect they would have been pretty much disowned and probably hiding from both their family and their country.
-The SA govt may consider the girls as an embarrassment for SA, as women are not supposed to leave home without a male guardian, let alone live an independent life abroad- it is simply not an option for women. And with the SA society considering them shameful, this would also bring shame to the family. So the SA govt/society potentially could want to set an example for them, as could the family (as a form of honour killing). This would make sense as to why they were scared, paranoid and timid. It is a whole different culture, even though it makes no sense to us and seems ridiculous.
-Bleach? The first thought that comes to mind is cleaning when I think of the word bleach! I would not choose to ingest or inhale bleach. There are much nicer ways to go. Being female, I would expect prescription medication as a first-line approach. Not only would bleach be difficult, but you would also likely survive as you probably could not handle the discomfort that the bleach would cause and would probably stop before having the required amount due to pain/discomfort. You also would not want to watch or hear your sister suffer. This makes absolutely no sense to me that they would actively choose bleach. I think bleach has been used to clean up or mask a crime.
We all know how SA work when they want someone gone or made an example for. There have been many high-profile examples of this. They have professional teams that do this work. These people are not going to force entry or leave behind clues. They would not be messy, and they could easily make a death look like a suicide. It does not take much to get keys to an apartment when it is tenanted. Property managers have spare keys that can be accessed relatively easily by the staff in the RE office, by contractors quoting work etc.
It would not be hard to ring the PM, claim to be the tenant and pretend to need something fixed, then contact the PM saying that the landlord has requested a quote for a job- in my industry, often a landlord contacts me, asks for a quote for a repair at their property, I contact the PM, tell them the landlord has requested a quote, they handover keys that we sign in and out of a key register. This scenario happens about once a week in my line of work. Albeit that would be messy in the way that you could risk being at some point identified.
Trained professionals could also have access to tools etc that locksmiths use, and I am sure could access the apartment. The balcony also looks like it would be very easy to access, especially with sliding doors.
Even if they did suicide, how are the confirmed odd happenings explained;
-The man watching their apartment- this was not their imagination, he was spoken to and gave their address as his address.
- Car keyed- (could be a random attack), however, could also be to invoke fear. May not have been random after all.
-Food tampering- what led them to suspect and report this? They would not just come to this worry for no reason. Perhaps they had noticed tampering, or food was not tasting right or packaged right. If they have died from some type of chemical-related death, I think this is important to investigate further.
-If someone had complained that their food was being poisoned and died of poisoning, I would think this is a huge coincidence. And if they had hoped to die, why would they complain about their food being tampered with?
If they were murdered by professionals, it is not going to be a messy murder.
Maybe their clothes were removed and disposed of to ensure no DNA or evidence was left on them. Maybe they were stripped after they died to make sure nothing was left behind. Maybe bleach was poured all over them to prepare to mask the future smell.
I wonder if this happened if it would show on toxicology as being in their system? (I don't know the answer to this)
Or were they stripped as ultimate humiliation to set an example for other women watching the story? Or as an honour killing?
The family didn't want their images made public to assist with the investigation. Is this because they are humiliated, or because they fear their society or govt will identify them and come for them once they know who they are.
If mum did come over, maybe she came over to try and convince them to return to SA, but was unsuccessful. Maybe the girls had to move so the family could not find them again.
I don't think these girls were desperate, they were smart and independent. They had each other and had come so far. They may have been scared for good reason.
Our country would have an interest not to name SA as a suspect in this, if they did this it could risk relations and put Australia at risk of poor relations, which could be very dangerous for national security. It would be easier and safer to make this go away quietly.
All my speculation, of course. Hopefully no guidelines broken
-