Continue to put your boundaries in place, show her you have dignity and strength. The smallest but most consistent changes are noticed. Keep all the monetary issues on paper. There is an online (free) communication tool called TalkingParent. It's a good way to document all interactions between spouses during divorce and can be utilized by the lawyers. It is very helpful when documenting who is acting in the best interest of the children.
M 10yrs T 13yrs BD #1Oct 2015-PA between WAH and COW BD #2 April 2016-WH resumed PA, she broke it off Jan 2 2017 WH says he wants divorce April '17-Letting go 2018 D busted DD8, DS6, DS3