Geez all this is such a fun thread, brings a gal back a few chinchillas
There is no reason you can not take her out in the day time for a spell.
Maybe split up her play time 1/2 & 1/2 afternoon & evening.What every you decide she will adjust too.
The key
is routine.If you do the same things everyday at about the same time she will know exactly what to expect.You'll soon find her waiting at the door for you.
If a chinchilla is left in the roll-a-bout ball more than 10 or 15 minutes, it is not unusual for them to pee in it.
Also she could get over heated in there, I'd keep the ball runs short.
Do you know how to hold her by the base of the tail?
That's the best way I find to keep them safe in my arms. As they adjust to being up I slacken off on my hold. If they make a motion to leap I tighten up again. It's amazing how much you can condition them too.
Patients is the best virtue here.
She may never be a shoulder sitter but most will get used to being handled.
As they are very curious I find they'll sit there longer if I'm moving, so try walking around the house with her up.
She'll be looking for an escape rout, but it gives you a Chance to talk to her and make her familiar with her surroundings. The smells the sounds, even the lighting are all new to her. It keeps their little minds occupied and will soon come to realized your not going to hurt them anyway.
Try to connect all the good things in her life to you, feed, runs, baths treats, and if she likes a scratch that too.
You'll soon see a chinchilla clinging to you for protection, she'll trust you with her life.
Screw up once and you'll put yourself right back to the beginning, and it doesn't matter how old or young they are.
They can get very ticked off
I think she's very lucky to have such a concerning owner.