I need some guidance

[JRuss]

You let her do what she's going to do. You don't have to help her, but you shouldn't try to make her stop or slow down. You can't talk your way back into a happy R with her. It will just look and feel like pursuit to her if you do, and that will push her further away.

{Aside: you don't need to concern yourself with her job change timetable and desire/demand that the D be complete then. Not even remotely your concern.}

Just keep doing what everyone's been telling you to do: cease all pursuit, go dark(er), GAL like your life depends on it (it does, at least a happy life), get into IC if you're not already in it, get fit, eat right, be pleasant but distant if you have to interact, like you'll be doing something incredibly interesting as soon as she's gone, get out of the house as much as you can, learn to meditate, read.

And, as much as you don't want a D, get a lawyer so you don't get boned or railroaded if she does file.