My mother lies about us to relatives she never sees. Should it bother me?

She hasn't seen these people for decades and I've never met them. She tells them that I am going for my PhD when I only have my BA, in English Lit, when I took Political Science. She says that my sister lives at home when she moved out a year ago. She told someone that our male cousin takes us to the movies because in her culture girls aren't supposed to be out alone, though we actually go out by ourselves all the time. Her relatives are really backwards people who are backstabbing and gossipy, who marry their cousins and don't believe that women have rights. My mom is not weird with us. My 18-year-old sister and her 21-year-old boyfriend went on a week-long holiday together and she didn't care. My dad is WASP-y and modern. Should I let it bother me? It just seems so wrong to me, especially since my mother keeps pestering me to give me photos of myself to show these people because some of these relatives thought the photos of my sisters and I were fakes because we were so white and because one of my sisters is blonde. She hasn't spoken to these people for years and she'll probably get sick of them again when they cause all kinds of misery and drama for her and she'll go running to us or my dad again. We all know these people are bad news.