she would turn on him the moment she found out what he did to yang and blake

Huh, this was neat. I haven't considered the possibility of Penny being recruited by the White Fang, but it seems like something Adam would do given the opportunity. All in all, this reads pretty well as a one shot, but it'd also work as the prologue to a longer story.

Bad you. Bad, bad you. Now go sit in the corner and think about what you've done.

This is an encounter I've never even considered, and it's rather interesting to read. Nice job.