Op, I’d urge you to take a balanced view for your sisters sake. You’ve now went down the route of she was near on enslaved, when telling us earlier this was her choice to not marry and to not work.
agreeing with everything she says is not going to help her.
if he’s been planning this for a long time, then it would appear he has been very unhappy for a long time, and possibly waiting till the kids were grown.
as said, relationships breakdowns are very complex.
I have empathy for her, her life is about to change enormously, she will need to work, ger her own home, be self sufficient and also possibly share custody of the kids, one of which at least is an adult, and I assume the second isn’t far behind.
how much equity can depend on a lot of factors, including how much he actually earns, plus he was supporting 6 people on his income.
its highly unlikely she would get a mesher order to stay in the house and force him to pay the mortgage, in fact its non existent chance. If he can house the kids under 18 then she would have to go it alone if she isn’t able to house them with her.
as she is unmarried and has not worked, she needs to get on the council,list. As she will be made homeless so they will house her. Trying to obstruct viewings so she can stay is a pointless short term solution.
I think she needs some time to get accustomed to the fact the relationship is over. That he has now moved on and is not coming back. She can sort her future after this.
its a worry she’s still in this condition after 3 weeks, and is making herself so very ill. I think she needs an emergency doctors appt and not to wait till Friday.