A suggestion about name calling. It's always easier to be madder at someone else than the person you're closer to. Calling his paramour a 'skank' seems to be a word that keeps your anger brimming. The true focus is on the relationship (or lack thereof) with your former spouse. Even in your dream you have no control over what she does, how ineffective your actions are and what he's willing to do.
Control what is yours. Drop the rest. Anything with hubby is financial, business.. effectively co-parenting, resolving financial issues, etc. Stop giving him/her prime real estate in your brain.
I had a wacky dream just recently about my former spouse's new Mrs. Kinda weird.. but I saw it as me accepting her as someone real in his life.. a life I have nothing to do with. Guess what? It's fantastic!
Chasing what is broken because of dreams held close to the heart only hurts.. you, you, oh yes.. and you. No one else. Holding hurt is easy. But guess what? You are fricking wonderful, incredible all on your own.
So stop giving that female all that space in your head, icky words in your mouth. Create healthy boundaries with the former spouse and make it Kat's Wonderful World of Katiliciousness!
And remember.. newly divorced women are the most savory treat to predators.. online or off.