Not sure how anyone can be on team anyone since non of us know what's happened.
It appears she saw a photo of him with his new girlfriend, 11 months after they separated and exited he definitely was seeing her 2 years before he left. But with no proof.
He possible was having an affair. Or he possible wasn't and started seeing someone after he separated.
I am guessing he isn't perfect. But neither is she. If I told DP I wanted to split and his reaction was to immediately post on fb or twitter I would see that as an attempt to control me and shame me into agreeing to stay. Infintley worse if you are famous.
Things like these usually have 2 different points of view
Alot of people are saying she gave up her career for him and now he has cast her aside. That absolutely could be true.
Or it could be a million miles from the truth. There's a thread at the moment where a woman of a similar age divorced and admits she just refused to work or act like a grown up in anyway. Refused to any house administration and generally just enjoyed her life of very little work even though her kids were grown up.
I am not saying Alice is wrong or right. But that the truth is mist probably somewhere in the middle.
However, she is the one potentially bringing damage to the kids. Usually during a split and divorce this sort of behaviour alienates kids. Especially, as they grow older and understand more about what happened.
I suspect, whoever, is the wrong (one the other or both) this will back fire on her when it comes to the children.