B.C.
Your husband needs to figure out who he is married to.
It's he who has to separate from his mommy whether his mommy likes it or not.
And only he can do this.
Don't let her watch the kids anymore.
They don't need her attitude or her husbands.
Speaking of her husband - why isn't HE taking her to Hawaii - and why isn't she asking HIM to take her?
Respecting elders is all good and well - but some elders are idiots who managed to live long enough to get elderly.
Age does not make them any less idiotic.
If I had the money I'd consider sending her to Hawaii.
One way ticket.
She can figure out how to get back on her own.