I agree with the others, do not call her or otherwise give her a head's up about what you plan to do. You cannot believe anything she says and it won't make a difference. If you are ready to file for D then file. If you're not ready then don't. It's got nothing to do with what W wants, only what you want.
Good for getting involved directly with the kids' teachers. W is obviously distracted these days so best to keep on top of things yourself so S6 and D8 don't suffer for her inattention.
If you love somebody, set them free. http://tinyurl.com/2empx2g
