Hi Kerry! *wavewaves :) She is very different to new trilogy Mystique that's for sure!

I can see Mystique watching River a a potential threat, so I would certainly love to do something with her! She'll probably hang out at the gym a fair bit, does River spend a lot of time there? Also I'm sure 'Sarah' would try to befriend Vanessa to pump her for information so that might be something else to do? :)

I'll be sure to hit up your permissions right after lunch xD