I know it's hard to do but don't bother her at all between feeding attempts. Put at least 5-7 days in between attempts. I purchased a baby that acted just like this for far longer than yours is. She was eating well until she was with me. I just left her alone completely, added a hide to her tub, and one night she just decided to eat.

I'm not sure why some BPs do this but some just need more time to acclimate.