I know these types of questions have been posed dozens of times on this forum, but I can't find as much information as I'd like and feel I should post situation specific questions as it may be time sensitive and i want to figure out how to handle this soon.

First of all, my and my girlfriend just got this beautiful stripe spider BP from Special K reptiles at the last NARBC in tinley park,IL. She has since pooped, has a very slight prolapse, and its about three weeks later and she hasn't eaten anything(we've tried live, FT, pinkies to small mice, in her cage, brown bag, rubber maid, etc). I think we may be keeping her in to large of an enclosure and regret doing it(32qt rack system), and she may be feeling insecure stressed out from it as she shies away from all food offerings. She doesnt shy away from being handled at all though, so I dont know. We have hides, water, temps 84(hott side) 76 (cool side) regulated by a thermostat. Humidity is 60%.
Anyways to get down to it, we were told she was a late start feeder to begin with, perhaps the pic will explain why we still got her, and she seems to be losing some weight and while we plan on moving her to a simple ten gallon setup that will be a bit more comfortable for her, we aren't sure if she will be ok without any food for another week while she adjust to it let alone eat even after the move.
So, we are open to any advice you guys can offer.... but are considering assist feeding just to make sure she gets a good meal in her if she doesn't eat good tonight when we try again with a live hopper. I know assist feeding is very stressful, so i don't know if we would actually do it.