My heart bleeds for your daughter, and for you.
This sadly is so common in 2021.
I have sadly been aware of a few young women feeling the same. And they have found an option of "transitioning to become male".
You heart wants to help her. Yes, you can, please help her to understand that she can live a wonderful, fertile and healthy life without cross sex hormones and mutilating surgery.
A path that would not provide her with the fantasy that she has believed is possible.
I have helped a few parents to safeguard their daughters.
I am intersex, and sadly too aware of the health implications this route can bring.
Infertility
Shorter life expectancy
Heart issues (Testosterone)
Early menopause,
Endometriosis (from testosterone)
Bone density issues
Kidney problems
She will led the life I have had, but by choice.... I can show her the reality.
The best method is to discuss her concerns about life, - could be body issues, sexuality issues.. so many... acknowledge those isssues, many just hate puberty and "being female" .. she can live a healthy life without facing those issues. taking testosterone will not solve.
Do all you can to delay the time she starts taking testosterone, even if she is binding her breasts. PLEASE delay and seek help, she will regret, and you can step in now.
You can DM me anytime, and I can help, and know other mothers I have helped and we can ALL help.