Oh @ChopinanChampagne so sorry for you but not the least surprised.
Completely predictable and so it will go on while you continue to do this dance with them.
I agree with @Grumpusaurus completely.
You are yourself in the grips of an abusive triangulation and are not prepared to accept your daughters part in this.
I too am astounded by the conditions she is prepared to rear her children in, especially during this period of awful weather.
No heating nor water for weeks?
I have frankly never heard the like of it.
Absolute neglect, which she is a willing party too.
Whatever kind of messed up madness LB is, she is their mother.
She has utterly put him ahead of her children, which is truly dreadful.
Your inability to hold HER to account for the conditions she is prepared to have her children in, is very sad.
I think you really need to look at that, because I don't believe she has ever been held to account.
I have 4 children whom I adore, but that doesn't mean I am unable to see them, for who they are, flaws and all.
Whatever else has gone on in the past, today she has three children being reared in what looks like abject poverty that should indeed be flagged to SS.
From your very first post nearly 5 years ago it was about money, and so it is now.
How much she can extract from you.
I know entitled children, I have 4 of them!
They are blessed through circumstances, but my goodness the level of entitlement she exhibits has been completely off the scale.
She is utterly unconcerned with how you lug more luggage than a family of 6 would bring with them, just as long as you do it.
She could care less that any young person would struggle with this load, not to mind her elderly mother.
Her complete lack of care for YOU, is chilling, but it is consistent with her ability to have her children living in the conditions you describe.
As we can all read clearly her tone instantly changed to abuse as you appeared to not be prepared to fulfil your deigned role.
I really hope you understand how much we genuinely care for you, through the ether, and want the best for you.
You desperately want your daughter to see sense and WE want the very same for YOU.
The only play here is to stop the merry-go-round that she has you on.