Well, remember that they can't hear, they just feel vibrations. So even if there's a noise that you may not think is loud, she might be able to feel the vibrations. I constantly have to make sure the bass on my BF's music isn't high cuz normally I can feel the vibrations on my desk!
If you're worried, I would try a live adult mouse. If not, just be persistent in offering f/t and she'll eventually eat.
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