Stefani,
I just spotted this thread for the first time today and read all of the posts and I feel for you and Learningtolive because you're both dealing with parental acceptance issues right now and it's damned painful for everyone. Being a parent of kids that are now adults was a huge learning experience for me and I think a lot of parents are a lot like I was. In my mind I always had some expectations of my kids, that they would make me proud and turn out like thus and so. They put me through hell on earth, or so I thought. In truth I had actually set myself up for disappointment because of my own mental expectations. This is what your parents are going through, it's not so much you, it's them that needs to make the adjustments. Unfortunately as a parent I had a hard time letting go and didn't realize that in essence I had my foot on the backs of their necks, and used all kinds of manipulative and hurtful language, cursing and swearing to get them to behave and get back into the mold that I had mentally prepared for them. One of the biggest hurtles was wondering what will the neighbors think and what will the extended family think? Will I be seen as a failure as a parent?
Eventually I was forced to concede that WTF it's not my life we are talking about, it's their lives and I can neither live it for them nor live my life vicariously through them. They are their own persons and aside from my job as a parent to feed, clothe, nurture and educate them K -12 there is nothing I can do beyond that and I am no longer in control. This is the epiphany every parent has to go through, it's a transition of their own and the best way to help them through it is to just be who you are and be sweet and loving toward them even as they rage through it. That will go a long way to get you all past the disappointment phase and into the acceptance phase a lot quicker.