Help! Not eating!

[Craiga 01453]

What’s the best way to heat it? I heat up some water in a pot, wait till I see bubbles on the bottom(right before boiling) take it off, and stick the frozen rat into it for 10-15 minutes and when the water cools I’ll heat it up on low heat. And Like if her waters low(I usually wash it out and refill it every week or when she dirties it up) I’ll refill it, spot clean, put hides back in, put lamp back ontop(should I leave that on while I’m feeding her? Ive never done that but I’m thinking that might help)take out uneaten rat/soiled substrate to trash and general stuff like that.

Ok, there's your problem I think. Your best bet is to keep everything in place prior to feeding. Do the spot cleaning as needed, rather than at the same time you're feeding. Any kind of disruption can cause a BP to refuse, especially moving their hides.
As for defrosting and heating...I let the prey item defrost in the fridge. Then, my tap water gets hot enough on its own to heat the prey. Depending on the size of the prey, I may have to dump the water and refill it once or twice though. That's enough to heat the prey to approx 100 degrees and serve.
The way you're doing may actually be starting to cook the prey on the outside while the middle is still cold. You shouldn't need 212+ degree water to get to 100 degrees.