I would also recommend doing your best not to react or respond to her venomous comments about the type of place you live or how the kids are with her or without you. Really ignore it. She doesn't sound like someone you can convince of your side right now.
Just be quietly firm and confident that your children need their mom and their dad and you are going to step up as much as necessary to see them through this transition. That doesn't require her to like it, or like you, use your solicitor to draw up an agreement you can live with and keep your interactions with W as businesslike as possible.
Adinva 51, S20, S18 M24 total 6/15/11-12/1/12 From IDLY to H moving out 9/15/15-3/7/17 From negotiating SA to final D at age 50 5/8/17-now: New relationship with an old friend __ Happiness is a warm puppy.