fmly- W will do what she will do you will not do anything to change her mind. You need to focus on your kids and you. As for speaking to her family- I would suggest against it because they are her family and will mostly side with her. In regards to your talk with the kids be up front with them and remain respectful in regards to your W. Good Luck!
M51 w50 T-20Yrs M-16Yrs S15- mad at W for not trying and giving up 1 Awesum dog BD 10/31/17 separate rooms 02/08/18 wife moved out 05/17/18