My suggestion: try to only use the camera on her and QUICKLY, since other animatronics have sound cues. If she is out of her cove, do NOT see her run. That spends 10% energy when she bangs on the door. Instead, just close the left door immediately.
I'm pretty sure not seeing her run uses up 3x more energy
idk the other day i was playing and not seeing her in the left corridor cam depleted like 10% energy i think seeing her depletes 15%
