Sure you can change it!
I don't have any name suggestions off the top of my head though...
I normally wait a few days and get to know any new animals before choosing a name.

And congrats! I think it's wonderful you chose an adult cat. Hope you'll share a few picture of her once you get her home with you!

 

Yep! You can rename her if you want You'll just want to use her new name a lot when you're talking to her and feeding her...She will learn it and begin to respond to it.

As for suggestions....I'm not sure! If it were a boy, I'd probably have to name it Garfield haha. But for a girl...not sure!

 

You can, but personally unless it was a name I really hated, I wouldn't, or maybe try to change it to something that sounds similar. I like Peaches, it's a cute name

 

You can change her name just be sure to use her new name often when interacting with her so she learns her new name. No name suggestions though.