A caterpillar is a tricky and unusual food when you try it for the first time. You have to get used to it and accept the fact that you actually have to eat it.
I highly recommend that you watch • Клиника. Сказ про лису... (from the rehabilitation centre "Sirin"). That video talks about real-life problems and walks you through the animals currently stationed there. That's precisely where we're planning to send Yt for preparing her to be released back into the wild. As a matter of fact, Ksenia (the founder and director of that centre) has got tons of unique info and content related to nursing wild animals back to health. I hope they will be releasing more videos more frequently.