My daughters, now 30 and 35, knew I dressed from the time they were in High School (probably even earlier) and simply referred to me as Aunt Barbra. My oldest had a slumber and swimming party when she was in High School and asked if I would dress so there would only be girls present; none of her friends seemed to have a problem with me en femme. Unfortunately I didn’t have a woman’s bathing suit so I couldn’t go swimming.
My youngest made a poor choice when picking a mate and when he abandoned her for someone else she moved back in and subsequently obtained a divorce. She has two daughters, 7 & 8 now, and she did not wish for me to hide from her daughters and I have dressed in their presence. The first couple of times they saw me they asked her why I dressed like a girl and she told them that I liked dressing that way and that seemed to be OK. I think they may like Aunt Barbra better than Pop-Pop as Barbra is softer and more forgiving. In the absence of their father Pop-Pop gets stuck with the disciplinary duties while Barbra spoils them.