Explain pronounces plz

So, Recently my friend came out as a girlflux which I'm very happy about but I'm not sure what even is girlflux. Google says that it's not being 100% a girl so does that mean my friend is a male? Female? In the middle? Or not having a gender at all? I'm not very sure. I want to try my best and be supportive of her identity but I'm not sure how too and I'm afraid of making a mistake on her gendering.

Oh and someone please tell me how pronounce work