https://www.gillhams.com/site/library/legal_articles/minors_and_contractual_agreements.html

Based off that and the way the UK is approaching gender reassignment as being a medical necessity, there’s a very good case to be made that she understood what she was doing and that it was medically necessary, thereby making the contract binding, as it should be. It sucks for her, but these people obviously are incapable of learning in any other fashion other than coming face to face with the consequences of their own poor decisions. Her parents included