It's your house. If she wants to "be away" then let her take the necessary steps to make that happen.
You don't need to help her, assuage her guilt over it, make it easier for her, or to help her pack.
You certainly don't have to make yourself invisible so she can pretend you don't exist.
BTW, my H pretty much wanted me to do that. At BD he suggested I just "leave and go live with my mother in another state." Seriously. Just pick up and move out and leave my home and friends and husband without a second glance. He thought that was a viable solution.
So he could be "happier". Well you can read how that panned out!
Sometimes I'm surprised he didn't just kill me. That's pretty much what he wanted. Everything to be exactly the same, except I was conveniently and neatly gone.
Except I know he doesn't have the guts for that since he can't even put a chicken out of her misery, so murder wasn't an option.
On the other hand, if it was "legal"...? Nahhh....
Me 54 Him 63 M 23 T 29 0 Kids Funny Farm of Rescues 12/12 OW-- 5/13 ILYBINILWY: A denied 9/13 Proof OW: ENDED 2/14 Got D papers on my BD I kicked him out for my sanity 9/14 He wants to "talk"?