There is no choice. W is F'ing the 'new love' and the girls know it. She's just down the street and they just want it to be over.
She filed and is 'hoping' for an uncontested divorce. D17 says that W and OM are like 'teenagers' so she sees what a f'cked up relationship it is for a 40 year old woman.
So, I need to move on, lose the bitterness, for their sake.