[mangoandmimi]

To be honest none of my female Syrians have actually appreciated time in the playpen. They’re not big enough! I do think free ranging them is much better - some won’t like it but lots do so if you can hamster proof a room entirely then it might help.

I will say I wouldn’t wait around for her to calm down or mature with age as it’s not uncommon for them to remain hyperactive through their lives, even if they are fully tame. They can be quite different to males.

Edit
When their bar chewing increases to the point that it’s constant it becomes a serious danger - at that point chews and things often do little to help and they do usually need to be moved into a cage without bars unfortunately.