Just my opinion, but you did kinda seem like you were coming here to say you were right and everyone else was wrong. As both Pit and I were trying to explain to you, BPs will generally not turn down a live mouse. Doesn't mean you necessarily fixed the problem that had her not eating.
I also know people who work at petsmart and they feed their reptiles basically anything they will eat to keep them alive. Including live, FT, mice, or rats. Sometimes they do things they don't discuss with everyday customers.
Pet mice and feeder mice are pretty much the same thing with a different price. Petco even sells their retired breeders as pets. That's why we don't buy rats from there to breed for our own snake food.
OP, just relax and make sure your husbandry is spot on. Don't argue with people when they give you advice. If you don't agree with the advice and choose not to try it, that's up to you. But when people with a lot more experience than you tell you something, listening would be the smart thing to do.