An acquaintance who I knew in highschool has since transitioned. Before publicly identifying as a woman she had a relatively neutral British accent with a some with a slight hint of Scottish. Since transitioning she has a full on lilting highland accent. Which i found odd. I have a similar accent to her original accent and decided to try doing a girl voice to see what it would sound like. And i too developed a strong Highland accent. Why? I was specifically trying not to.