Try and refocus ok? What do you need to do to parent the kids? What would it take to make them happy? What would it take to make you happy?
They are just showing their resentment over the sitch by saying mean things. Take what they say as a form of constructive critism and step up and follow through.
You can be the Dad you want to be but you have to put the focus back on them now because they need you.
Also you can't control your W. Pay attention to you and the kids and once the changes are in place she'll strat to notice and maybe have a change of heart.
Jen *The more anger towards the past you carry in your heart, the less capable you are of loving in the present*