Laurie, I was saddened to read this latest development. Unfortunately, family can be very rough to deal with. They are the ones who knew us before we came out, know what we are sensitive about, and for better or worse, know what can hurt us.
Family can accept us for what we are and welcome our true selves with open arms. Unfortunately, unlike others, family can also use us as a distorted mirror to reflect all of their own issues and troubles. (I've gotten both responses.)
It took me many hours of therapy to figure this out, and realize there was little I could do beyond stepping back from hostility and anger. In time, they may find healing and move past their current issues. Meanwhile, you take care of yourself first. You've spent far too long putting what others want you to be before being true to yourself.
In your recent trip, I think you experienced the broader world, and likely found more acceptance and tolerance than you expected. By now you should know that being your authentic self is OK, and you have the power to forgive your past self and become a better person.
Now do it, and eventually others will see the authentic you and recognize that better person.