Dear Abby: After 21 years, I’m done letting my husband’s family revolve around his sister

Dear Abby: I am a gay man. My husband, “Isaac,” and I have been together for 21 years, married for nine. I’m having challenges with his sister. Over these 21 years, I have observed that any decisions involving their family gatherings and vacations are strictly determined by his sister, with no consideration given to whether the time, location, etc., works for Isaac.