Is there some way we could sabotage the shuttle system to get Whistler out of there and extricate a whole bunch of other people?
Someone with greater back story knowledge than I - @Revenir maybe - we need a list of everything we can be sure KS knows of us. That's the limit of what we can tell Whistler. Then we tell them, and support them to get them safe. I'd rather not lose more people to this.
What is Climber doing? That's an excellent question. The answer might, sadly, be that Climber can't remember to do anything at all. If KS are happy to continually wipe their staff, I doubt they're leaving much of their captives intact.
There have to be long term side effects to daily memory wiping. I wonder what their staff turnover rate is. Do they need temps? Volunteers?