2) the truth always seems to have a way of coming out.
Confronting, not confronting, whatever, will not make this come about or prevent it from coming about. What I can warn you about is this: if you confront, she will do a lot more to cover her tracks. After I initiated BD, my W changed all of her passwords, PINs, and started signing out of apps (I found out the messages for her EA in Facebook messenger app on her PC, even though she was messaging with him on her phone.) Take AS's advice, do not confront until you have the evidence you need. Otherwise she will start jumping through hoops to hide things.
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712