Hi,
The hairdryer is a well known and accepted trick for heating an F/T quickly - nothing wrong with the advice at all in my book. It also allows you to spot heat the head etc which can be usefull if they tend to grab it by the butt without the thermal clues.
I don't see how her method of feeding live affects that at all - It's not a method I've tried but then again neither is dipping in chicken broth, which again, is a well known trick for F/T.
dr del