The voice that comes with testosterone is pretty easy to spot. It has a raspy sound to it.

I'm sorry about what you are going through. It's hard to sit on the sidelines. My daughter, who wants to be a boy, has a daughter of her own. It's so hard to hear my granddaughter call her mommy "dada" and use he/him pronouns. My daughter shouldn't be raising her for many reasons. It's hard to watch!