[Shannonmcn]

Does she have enough space where she nests for a hoard? Sometimes if their sleeping spot is smaller they will want to put their hoard somewhere else but it has to be somewhere else they feel is "safe" like their favourite wheel!

Try a bigger nest box, like a shoe box or something? If she already has a big nest she might just be a weird one. She also might just grow out of it, all of mine have done this at some point or another but never forever.