[Lilafernim]

I also have had a female Syrian hamster that changed behaviours at times. I’ll be honest, she never went to biting me but they’d be times where she’d suddenly start bar biting for no reason.

First of all, if this bigger cage is still very new she may be scenting everything, and feel territorial over her new area, she’s basically having to settle all over again.

Also, a trick I used to do when I first got her was if I washed my hands, before presenting them to her I’d rub my hands on the sawdust so it was a familiar smell to her.

Normally mine would start being more aggressive if I had moved locations, and it tended to be a case of handling, and allowing her to roam still so she realised it was still me and there was nothing around to be afraid of.

The other thing I would consider is checking the length of her teeth as they may be long so she may be biting more to wear them down. Make sure you have an array of chew toys and use tricks such as peanut butter, or I used to use those natural hard dog treats along side normal wooden chews.

Like I say, sometimes mine just used to suddenly act different for a few days, and then just completely calm down.

Hope some of this helps!