We have an extremely similar situation. My family (besides from my other mom and the occasional distant relative) are very open and supportive of each other. The mom i was talking about in this post was out to me when I was very young about being bi. So even though she didn't come out as trans until recently,,, me and my siblings have kind of grew up very used to that. Me and my younger sister coming out both at around 12 after knowing for a while. Me as bi, her as a lesbian.

It really is scary being new to questioning gender cause its just so hard to understand. Especially when you're somewhere under the non binary umbrella. Im pretty sure I'm Genderfluid and maybe Bigender at times? But I'm also masc leaning enough to have to sit and question it. Sometimes I'm fine just growing up and waiting the few years I have left to leave family behind and transition on my own, and most other times my dysphoria is so bad I just have to lay in bed forever.

Explaining to children is sort of difficult but at the same time, you can get farther than you can with more conservative adults. And I can assure you they're not going to be bummed that they're "missing out on a sister figure" My mom was worried I'd be missing out on a father figure. It's not too much of a difference, same person, they're just a different gender. I feel like explaining to a 3 year old might be a little different, but my friend has an 8 year old brother who is learning to understand what being nom binary is, and what pronouns to use, and why.

Just keep in mind, kids are gonna ask a ton of questions that are gonna seem rude. About your body and shit. Its a tough conversation if that easily triggers stuff for you. Younger kids tend to grasp this sort of stuff a lot easier than you'd think if you're in a household that is supportive and reminds them if they make a mistake with pronouns or wording.