I help my nephew try out a trans girl

When her favorite nephew grew up she took his father's place to talk to him about all those topics that would have been impossible with her own mother, and she tried her best to be the most understanding and cool aunt. She didn't expect that this trust would go so far. One day the boy approached her with a simple request. Her sex life had already been active for some time and she could boast that she had tried everything she wanted, but there was one thing in particular that she wanted and that she knew that only her favorite aunt would give her the help she needed,