How to best handle a competitive female?

There’s a man I liked. I’ve noticed in the more recent posts, where some of my questions were about him, a younger woman keeps popping up, saying things like that he’s not interested and to find another guy; and sharing information about how he’s seen her undressed. He’s implied a lack of interest in her; but the first time I just wished her luck. Now, she’s starting to annoy me. How best to handle this? Block her, ignore her or be nice to her? I don’t compete over men and I have no interest in fighting with her. It’s just starting to annoy me, her coming back and creating drama over nothing and sharing stuff like their sex life.

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I’d normally think it might be a set up, to try to make me jealous, except this guy is very hot, rich and charismatic. So it’s not impossible that a younger, silly woman might act like a cat in heat over him.
How to best handle a competitive female?
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