Your husband is the problem, NOT his family.
He needs to get a grip and stop with all this inability to say no "due to guilt over past divorce". His children are adults and he is doing them no favours, training them to be exploitative of others.
It's good that "he was not pleased when I told him what went on" - but what is he going to do with his displeasure? Voice it to his family, or suck it up and ask you to suck it up too?
Jersey trip, some tips please.
What do you find yourself avoiding more as you get older?


