I don't feel that a picture posted on her site defines her in any way. Photographs are used to remind us of an experience, a celebration, memories of something or someone special, etc. Since it's her fan site I don't find it shocking to see pix from the show, rather I would expect to.
She has come across as a very candid and gracious individual, and I think it's cool that she takes time out to answer the questions that her fans have about the show.
I got the impression that Bev is very close to her family, she stated that there was some distance in the teen years. which is sometimes a natural part of growing up. She seemed very close to them from what I noted. Teenage years are full of angst, but they pass and we grow up and appreciate our folks. I won't hold her accountable for teenage mistakes, as I've made a few of my own during the growing years.
What I thought was important was that she said that she didn't regret them, because she learned from her mistakes, which is why sometimes the mistakes in life teach us the most about what is important in life.