I know that is a possibility, but I also remember cases such as the retired couple from St. Albert murdered by Travis Vader, presumably for their cash, when he was strung out on drugs and desperate.Sadly, it could yet turn out to be organized crime involved and in that case we may never know what really happened.
I think there could be an innocent explanation why they had a lot of baggage that they didn't want to leave on the boat and needed to take down to keep at Daley's place at Jordan River.
Asking someone to come pick them up and take them to JR, whether taking the ferry over from Squamish, or coming up from Victoria, would require a good 12 hours, I think, and then the driver'd need to get back to their home. Plus the driver would need a big vehicle or truck, a compact car wouldn't work. There's not many people I'd ask to do me that kind of favour.
Maybe they trusted the wrong person.