IT WORKED!!! So I tried feeding her a little bit bigger of a mouse last night, "small mouse" from Petsmart actually. She wouldn't take it as usual, so I decided to just leave it in there overnight. Came out this morning and she was all wrapped up in her hot hide with a nice fat belly.
Thank you for the suggestion!
Congrats! I just got my baby BCI yesterday so I'm curious how he'll do his 1st feeding. I saw a lot of people on this thread mentioned 'wait until he's in his hide' but I've yet to see mine go in either of his hides.