Do you think that may be because she has everything she needs in one area? My lops used to spend all their time in the dog crate when I had it, even though the doors were always open, but now that their bed is in one area, their litter tray in another, water bowl somewhere else they use a lot more of the room. When I turn the light out at night Mischa often decides this is time to munch. So I hear, run, run, run on the lino; munch, munch, munch in the litter tray; a jump back out; run, run, run on the lino again; glug, glug, glug from the water bowl; then the process repeats! They will often do laps with their Fibafirst pellets at breakfast and dinner. Right now they are asleep under the chair (well actually Mischa is standing guard by the gate :lol: he's after something but I'm not sure what right now). The lionheads do something similar as well. It almost forces them to move around.
It's funny, my lops' room is bigger than the lionheads' but it's always them who try to sneak out of the gate. They aren't desperate for more room, they are simply extremely nosey. :lol: