AFAB genderfluid here. You have very limited information, I know that, but whatever.
My dad came from a quite traditional family. He used to be transphobic himself and was a little weirded out when I came out as a boy on some days, but my mom was always open-minded and my dad learned to accept it.
His sister, on the other hand, never learned to accept it and stayed the same: supportive of me liking men and women, but seemingly not supportive of me being genderfluid.
One day, I said I was on my period, and she said “Boys don’t get periods, so you’re a girl”. When I first came out, she said “Well I accept you no matter what my beautiful niece” and is always trying to get me to look and be more feminine. She tried to get me to wear a skirt a bit ago when I’m usually a guy, not a girl, and I also don’t really like wearing skirts as a guy.
No, she doesn’t - she doesn’t even know what love actually is. Telling you she “loves” you is her attempting to manipulate you into trusting her so she can try to remake you into her preferred version of you. Don’t fall for it. When you love someone for real, you accept them as they are - you don’t push them towards something they’re telling you is wrong for them.