I think the in house S has it limits. Her goal is to be S from you and in my experience she never achieved that as I was told.
I did stay in the house. At first she thought I would leave right away and get an apartment and she would stay in the house and have basement renters to help pay for it along with my payments to her.
I didn't leave, its been 9 months and I said no to the student renters. She cant carry the house on her own and I couldn't carry the house on my own, partly because the value has gone up.
So with you moving back in you need to have a plan of course you wait till W pushes the issue. You are on her schedule. My time ran out, she contacted a lawyer and if I didn't agree to selling she was going to take me to court to get things moving.
Right now was are not fighting and things are ok, This was a reason she gave me for the S was that we were fighting but now, over all there is no fighting. There is no exchange of affection either and that is not good to model for the kids.
I think it good to move back if that is what is good for you. You will find out soon enough and change the dynamic as needed.
Me late 30's W mid 30's T 15, M 10 S4, S7 ILYBNILWY June 2015 In house S July 2015 W rings off Oct 2015 My ring off Feb 2015 Separate houses June 2016