4 year old not eating for 3 months

[Homebody]

cool temp is around 75, warm temp is 85. humidity around 60-85, depending on how long it's been since i sprayed. she has a uth, above heat, day/night cycle, hide on both sides, plenty of stuff to hide in (fake plants) she would always let me know when she's hungry by laying her head on top of her rock. she's been doing that for 3 months, but every time i give her her f/t, she ignores it. she'll even lay next to it. today we offered a live mouse and she completely ignored it. she went through shed a few days ago so i figured she'd be starving. she's active, doesn't seem distressed at all. rarely handled, just leave her to herself. i felt for any hard blockages and didn't feel anything. i don't see any mites either. i'm at a loss. she hasn't gone this long without eating before, and i'm wondering if it might possibly be the changing weather, but the last time she ate was in july. would love any advice

Temps seem a little low. You'd be safe bumping it up to 90 - 80F. Humidity seems high. I'd aim for 60%, higher when in shed. How long have you had her? What have you been feeding her and how often? I ask because overfeeding can bring on a fast.