A question just for the sake of discussion, setting aside all assumptions like "suicidal people don't plan a party" because I think research clearly shows that not everyone's behavior who commits suicide shows a lack of short or long term planning.
Let's say that Abbie's family knew or suspected she was depressed or had suicidal ideation in the past. If they suspected that the most likely reason for her disappearance was suicide, how would you expect them to act differently than what they have done? They've asked for privacy. They haven't made public pleas for her return from a kidnapper. They haven't issued calls for the public to turn in tips of anything suspicious. In short, they haven't acted like her disappearance is unexplained. The media has portrayed it as unexplained, and the public has jumped to the conclusion that it is unexplained.
I guess my question is, what if the reason for her disappearance is explained, and they are just trying to recover her body at this point? What if they aren't asking for answers, because they don't need any?
Granted, we aren't used to seeing this in missing persons cases because very often the family doesn't know or is in denial that their loved one is suicidal, so it's just one option among many that could explain what happened to them. Therefore, the family's lack of urgency in this case is viewed as inexplicable to us. In reality, there could be a good explanation and one that is very private. It's making me think that seeing all the posts like "Is anyone still looking for Abbie?" "We need justice for Abby" etc could be quite painful for them.