Obsessive nibling
Hi all, I have a nibling who, in the last year, came out as nonbinary. For context, they turned 12 last week. They also came out as agender a couple of weeks ago. Which I believe falls under the nonbinary umbrella (pls correct me if I'm wrong. I don't know much about it.)
Their parents are trying to be supportive with "you can be whoever or whatever you want to be" though they still misgender their kiddo. However, it has gotten to the point that being agender and being a therian are all they want to talk about. My sister said that they are so hyperfixated on those two things that they rarely talk about anything else. My sister and the nibling's dad say that those topics have become their kid's entire identity.
As the queer adult in their life, I am as supportive as I can be while living in another state. My nibling was supposed to come stay the night with me this week, but I could never get ahold of their dad and my sister wasn't responding to any of the texts I sent her about it as well. Finally I just called my sister yesterday evening to ask if my nibling could come stay the night. She said that right now neither she, nor the dad want their kid spending time with me because they know I will talk about queer stuff with their kid (their dad literally said I'm grooming them) and they are hoping to get their kid to focus on something else in their life. Apparently they are getting bullied about it at school so it has become a thing my sister and the dad are genuinely worried about. Which I understand as a legitimate worry. It's summer break and they're hoping that the time away from school, and no screen time will help them focus on something that *isn't* being queer or being a therian.
When I told my fiance about the convo with my sister he suggested that when my sister is ready I can drive up and spend the night. He also pointed out that as the queer adult in my nibling's life I can also be the one to help them understand that, yes being queer is a big part of our lives but it doesn't have to be our entire life. My sister said she loves the idea, and that she's really glad that I can someone they can look to for things like being queer.
Anyways, do you all have any suggestions to help me/their parents get my nibling to focus on something that isn't those two things?