"She had always been anxious, depressed, and withdrawn," Amanda said of her daughter. "We had done everything we could think of to help her and figure out what was going on with her, to no avail."

When Alexis came out, her mothers immediately stood by her.

"[It] was the call for help we needed to finally be able to support her in the way she needed us to," Amanda said.

But Amanda said she didn't realize at the time that her wife knew what their daughter was going through. Zoe Knox was also transgender, but couldn't vocalize it.

"Watching Alexis blossom into the girl she was always meant to be made it impossible to keep living the way I had been living," Zoe Knox told BuzzFeed News.