I understand how a girl of your age can get into a tiff with her mother. Sometimes, this even happens at the medical clinic. Sometimes we decide that we just cannot stand to be around the other person, and we decide to walk 12 miles home from the clinic in a driving rainstorm.
However, we should not wait until mom uses the restroom and then book it out of the clinic and start hightailing it down the road. If we are going to do this, we should tell a staff member about it so they don't worry. And worry the staff did when mom came out of the restroom and could not find you. There was much paging of an 'Amber Alert' and searching the clinic and grounds and police cars coming to visit the clinic. One of those very same police cars found you about 15 minutes later trudging along a busy highway in the rain on your way back home. The police brought you back to the clinic and it was not one of those tearful yet joyous reunions that you see on TV. My staff had the vapors and I had to recommend that they go home after shift and drink heavily.