You are wise to get a DB perspective. I would caution not to allow her to change the business structure in anyway until you have consulted an attorney.
I would suspect that from a legal perspective she does not have to let you use one of the property's unless you are going to pay the rent that was being paid by a tenant. If the property's were in your personal name I would say otherwise.
I hope you are able to work this out. From you perspective it seems as though you are trying to be reasonable regarding the properties. However, I suspect that right now you are the only one in the relationship thinking that way.
Me: 30's W: 30's M: 12yrs EA: Started 3/2015 MC Started: 4/2015 She moved out and served 6/2015 PA: Confirmed 10/5/2015 2 young kids
"If you do not stand for something you will fall for anything."