...Somehow I managed to miss these, but it's definitely something that Fang would be interested in. Considering she's been around Lightning for a long time, she's probably heard of it that way, but I'd happily do a thread with someone if that's preferred! As for the questions:

A) She'd want to either be with Lightning/Hope (having fought beside them previously, family, etc) or Xion (trying to keep her out of trouble) but would be fine anywhere.

B) not at the moment, though she's considering splitting off and going for the badges

C/D) No and no.