I'm still a little confused about where you're going DLS, heheh, but I'll try. No doubt they had more influence on her than I did at the time. I didn't spot it I suppose because I wasn't really even thinking about 'exerting influence' on her as a concious decision.
As for her affair, oh there is no doubt that her friends encouraged that. As for how it all pieces together, all I can say is that it was ten years ago. To explain the pieces and how they all fit together would take a LOT of speculation on my part, and would likely have to be book length to explain even what I do know and remember.
To be honest, I've pretty much put everything I know about "the friend" part in this thread already. What I found out about it I found out well after the divorce was final, and by then I wasn't all that interested in examining what happened in any real depth. Sorta wish maybe I had, it might be useful now, but I simply wasn't all that interested at the time.
Life may be short, but . . . well . . . it actually IS short, now that I think about it . . . . particularly when compared to planetary formation and stuff.