Letting go for my own inner peace

[Irish M]

So I gets call from my GF last night.

She is upset and with reason.

One of her longtime friends , we will call her Amanda. She Lives in a town 45 mins away.
Says she has a new neighbour. A woman that moved in with the guy across the street in January. The guy is a local alcoholic . Loser type . Samantha tells her that this woman came over to say hi, since the guy is doing work on Amanda’s deck. Handy man to get extra $
That night Amanda gets a friend request on Facebook from her.

My GF sees a pop up yesterday. Friends you might know. The name of my XW. She thinks no. Impossible . A person with a contact in common , Amanda. Of all towns and houses to move ... impossible .
Looks into it and yes. It’s her

GF calls Amanda. Fills her in . Amanda says that she said nothing of having kids of her own. Said they are soul mates helping each other fix their broken pieces.

So XW is onto OM2. Moved in. No contact to the girls. She knows the girls wanted OM1 gone. She stil choses her fantasy life over them.

Do I tell them?

GF is so upset. Is worried when she goes over there she will see her . Wants to smash XW face for the pain she gave to the girls.
I was supposed to go to a bbq this spring there as well. Makes for a real uncomfortable situation.