As far as this weekend, I doubt she will get into the A. She will stop at M problems and likely D.
Pup (et al), talked to the family friends that WW went to see. She was there all three nights as she said. BUT, and this was good, friends asked her if she saw anyone other than gf she was going to see before she got to friends house - NO RESPONSE - to which friends said "I will take that as a yes". (WW told friends about the A.)
About what I expected. She was definitely with him, but still trying to hide it.
You can do what you want about exposure to her family. I work in advertising, marketing and public relations, and have a saying: "Always position YOURSELF, before your competitor does it for you." Your wife is likely going to spin her family, full-tilt, this weekend, replete with all kinds of "You will hear all kinds of crazy things from L.I.S. -- he's paranoid, I've never seen him like this. He's so CONTROLLING!"
I'd strongly advise that you talk to them first, and tell them the truth.