Hi,
Since she escaped last week and keeps trying the same spot it might just be it is taking her a little longer to "give up" and settle down again.
Have you thought of asking the humane society for the details about how they went about the feeding routine since it worked so well for them?
Maybe they were doing something completely different ( what state were the mice in when they fed her F/T or PK or live? ) that you haven't got round to trying yet.
If it was PK or FT for example they may have been leaving it in the tank overnight or even covering the tank with a towel or something while feeding.
There is also the prey types you have not tried yet - I was thinking maybe chicks or ASF's as a short term idea to get a rythm going if she would accept either?
But asking for the details of the original feeding routine would be the best first step I think. Borrowing the wifes hairdryer to really heat up the head of the PK and FT's is always worth trying too - but if you get caught it was nothing to do with me allright?
dr del