I’m curious to know if Lyft driver was a “regular” in that area for flights coming in at that odd hour from LAX. I’m curious if there were others in the vehicle. Perhaps another person was in the car with her... and they both got out at same time? There have been many reports of a man approaching ladies waiting for a Lyft asking to join the ride. Maybe driver is accomplice. Like they are in on something together.
I did think about the possibility of a “shared ride” or “pool”; again this would be evident via the records (assuming it’s not a hinky collaborative situation as you possibly mentioned). As for the ride itself, the chances of someone else getting out at the exact same time and place would not be high, imo. Again LE would know this from the Lyft records if everything was done legitimately.
Most drivers ARE regular airport drivers, as this is a common destination, and for many drivers “the bread and butter” of their business.
Chances are likely imo that cameras would have caught if someone else got in the vehicle, considering the airport location, if as you said maybe there’s an accomplice/collaboration with the driver. But I’m just not seeing this at the moment as it seems things seem to check out with the driver. You know he would be the first one to be very very closely scrutinized.
Of course not much has been released so it’s all highly speculative at the moment.
Do you have any links to the reports of a man approaching the ladies? Tia.
Again this is all done via app so assuming the Lyft driver is “clean”, I doubt he/she would let someone else in the car. The rider (Kensie) would have to elect a “shared ride” on her end of the app.
Now, jumping off this, unless she met someone the plane and maybe they collaborated on a ride. Of course that has not been indicated. Or did someone maybe follow her from the airport?
FTR at Denver International there is a specialized area, the “cue”, where the drivers wait in line to receive the rides as they come in. With it being 1am I’m not sure how many people would be lingering around the airport. How many people were on her flight I wonder, what other flights were arriving and departing at the same time?
Its all open brainstorming and discussion here. 
