Moon and sun compatibility

Hi i have a question about moon and sun signs. I have this thing with a Gemini girl and I'm not quite sure what her moon is but I'm a libra with a Capricorn moon. Would it be better for her to have a An Air moon or earth moon when comparing with me?

She said she doesn't know the exact time of her birthdate but i checked some application on my iphone and she could either have a taurus moon or a gemini moon. Not sure if either of those help much.

Yeah I guess I won't think too hard about this stuff then..