There’s always a pseudo maturity to these children. Well, according to their parents. They are always resilient, brave, steadfast and consistent.
I honestly think it’s because parents have been through hell and back and need to feel as though the hard bit is over, their child now has their physical/social transition needs met and they are now ready to become a young adult.
Whereas, of course, the worst part is still to come. Their 17 year old will become a masculinised 25 year old with a very limited number of people with whom they can be in a relationship, reduced/no fertility, complications of testosterone on a female reproductive system and the loss of their breasts when they were still a child.