Have you tried placing your BP in a smaller enclosure e.g. box or bag you got them in? Just thought that this is what was suggested to me should mine refuse to eat again (totally forgot to mention). If she shows no interest/strikes but doesn't constrict etc I was told to put mine in a box/bag with the rat inside (F/T not live of course) with her and place in the middle of the vivarium (or whatever you're using to house her) overnight. It's another option to try?