If a 15 year old is pregnant then that is not a mental health issue. No amount of counselling or therapy is going to make a foetus disappear, that 15 year old needs a safe abortion if that's what they want, it is a physical issue. If that abortion is not legally available then yes, they may turn to an illegal abortion because there is literally no other option available if they do not want to be pregnant.
If a 15 year old is so unhappy with their sexed body that they feel that their only options are suicide or buying very dangerous drugs from a dark web seller, then I would say that is a mental health issue. And that someone needs to step in and give that child therapy to help the.
I don't think I have articulated that very well, but to me, this is just not comparable to abortion.