Switching from live to F/T, I feel, can be better accomplished focusing on husbandry and F/T temps. If you have the living conditions right AND get the F/T up to the proper body temp, you have a much greater chance. I'm not saying it is a definate because I understand some BPs just refuse to eat F/T. Your first hurdle is to get her to eat F/T mice. Again, get the F/T body temp up using a hairdryer or heat lamp after it has thawed out all day, then grab the mouse at the scruff of the neck and move it around to make it act like it's alive (zombie dance). Once you have success with that, then you jump to F/T rats. One technique I read about is to get some substrate from one of the mouse enclosures at the pet store (usually they will let you have some they are going to throw out anyway) and then you thaw the F/T rat in the baggie with the mouse substrate to kind of make the rat smell like a mouse.