It’s a lovely space for her – but as bam says, once a bunny can get out, they will do everything to get out !!
I can’t really tell in the picture but the pen doesn’t look very high for the size of your bun. I estimate (on no scientific evidence whatsoever…. lol) a safe height should be a minimum of twice the stretched length of your bun… Mine is 110cm high and I have a French lop eared.
If the pen panels are moving when she tries to move them, then her determination to ‘escape’ will be stronger.
Can you fix them at all to the walls or part of heavy furnituer?
Or do as I do which is tie a heavy pack of 12 litres (6×2) of water on to them so they can’t be shifted.
If you can move the panels with the strength of two fingers (again, not scientifical !) then she will be able to easily with her gnashers!
Once she realises she can’t get out, she’ll try less.
For the minute you’ll have to cover the pen up (be careful she can’t reach the top – if she can it is WAY too low) maybe with material around the edges…?
It’s a case of “the grass is greener on the other side” – its NOT that she hates her new house… it’s that things always seem more interesting on the other side (ie where you are!!)
PS – she is LOVELY. 