I'm glad you are going to talk to her. My sister does the same thing and I won't ride with her. In fact, my mom, brother, sister and I were going to an Elton John concert and my sister drove. I was so anxious about it I wrote out an "in case I don't make it back" letter for my daughter and laid it on the bed. No joke. That's just dangerous. Good luck with your talk and best wishes.