Few questions about a sort-of-rescue...

[Skittles1101]

I'd personally save the mice in case you need them to scent your rats Eating mice for 2 years, even as infrequently as she was getting them, may have made her a mouser

Post a pic of her! Then you'll know for sure if she's a pastel

I refreeze once without issue, if it's refused a second time I toss it.