What could be the reason for a woman to be so nervous and cold near a man?

I see her once every few months. We’re not friends at all.

The feeling I get from her every time she is in a terrible pressure to my environment. Interior suddenly become frozen like a stone, such indifference. I do not know if it’s something in me that makes her these feelings but it sure has not happened to me with anyone ever.

It’s something in me or her? I’m very kind and nice person in my life.