How to talk to my younger sister about her being non-binary
I (a 17-year-old lesbian) had a very homophobic upbringing, so when I was older I wanted my 11-year-old younger sister to have a more friendly upbringing. I always answered her questions, including those about trans people. Currently, I've noticed a change in her; she's becoming more concerned with her appearance (and it's not just because of her age), she's paying a lot of attention to trans issues, her favorite character is a non-binary character, she's always happy when there's a character like that in a series, and the main sign is that she's been watching a lot of trans-themed films and uses a non-binary flag and a neutral name on her YouTube account. I see a lot of myself in her when I discovered I was lesbian, but I know it's a much more complicated issue. I follow trans people who have had very bad experiences, I have a trans cousin who also went through bad experiences, and I want to be a safe haven for her regarding this because I'm the only person who knows about it and who would best understand, being the only LGBT person in my house. I want to help her mature enough to face what she will face in the outside world; I don't want to hide her from it. I'm keeping her in the closet because I know how awful it was when I was there, but I want her to come out and understand what it's like to be non-binary in our world. But I still don't know how to talk about it. She wants to show me a movie on this topic, and I think that would be a good way to start this conversation, but I still don't know what words to use so as not to embarrass her or anything. I'm open to advice and apologize for any disrespect or ignorance.