About the kitties: I think they'll be bothered by the travel, but not beyond their ability to cope, and they'll be OK once they settle, enough to feel safe and loved and taken care of. (if a few randomly drawn cards are anything to go by. For me, it usually is...)

You don't need to be better. You just need to be who you are, where you are, how you are. There isn't a timetable for this... and I think your sister would understand that you're doing your best, and if that includes selling the car so you can buy a new one at home, it's OK.

You're in my thoughts.