Carolyn Hax: Is your father lax about staying in touch, or is his new wife in the way?

Dear Carolyn: Eight years ago, my dad cheated on my mom and ended their marriage. A month after the divorce, my dad married his mistress. While her adult children were in the wedding party, neither my brother nor I were even invited. I didn’t meet her until a year later, when I was told she didn’t feel comfortable with me staying with them in the house I grew up in, and they demanded I leave. The one other time I have seen him in the years since, she insisted on chaperoning the visit.