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Welcome to the forum Pinky.
Female mice are usually very sociable so in an ideal world she would have the company of other mice. (Males on the other hand can fall out with each other and it's very difficult to keep a group of males together.)
You can certainly help to enrich her environment by providing cardboard tubes and egg boxes that are safe for her to chew. A decent sized wheel or flying saucer usually goes down well with mice if you don't already have one. Hammocks may not be such a good idea if she is liable to chew them but those plastic sputnik houses make a good alternative. You could wrap treats up for her in tissue so that she has to spend time unwrapping them herself and also, let her have as much free range time with you as possible.
Proud owner of 2 chinchillas and a dwarf hamster
(chins for the win!)
If I'm not active I have probably forgotten my password (again)....