Sounds like a bad plan to me. I am sure you will hear the same from others but if she wants space she can go get her own place and have her space. If it is a financial burden then you shouldn't contribute to a second living space. My WW and I have been in inhouse separtaion but we have a spare bedroom in the basement with a full bath so I don't mind it at all. Have to look at what is best for kids and that moving around is not in their best interest.

Not sure your financial sitch but I would stay put. I doubt you are required to contribute if she wanted to move out unless there was something legal in place.

H-50
W-48
T-19
M -18
S23, S14
BD - 5/9/2018
OM discovered 5/10/2018

In house sep - 8/18/2018
Rope drop 2/15/2019
R'ing since 3/15/2019