Just a little update. She has pooped and on empty has gained 5g (now weighs 44g). She's still not eating on her own but the wobbling has decreased. Normal movements and only wobbles if I disturb her or as she's finishing swallowing a meal (slight shake and she's done). She used to flip over backwards when she ate because she couldn't balance herself. Today, she ate (assist fed) and didn't fall over. So, she is making small improvements. I'm soaking her every 2-3 days to make sure she is staying hydrated.
None of the other snakes are exhibiting any symptoms of illness.