This is normal. Average to okay looking women typically feel that they have to be a little bit more forward to get into a relationship with a man they like.
The more attractive a woman is, the more options she has, and therefore she doesn’t need to be forward with you, even if she likes you.
This isn’t always the case of course, but it’s usually there at some level.
Though I would say women in general are passive, and their approach to mating (can’t think of a better word) is to get men to notice them.
For me personally, when a highly attractive woman finds me physically attractive, the most she’ll do is position herself in my eye-line, if she’s sitting down maybe she’ll find an excuse to get up (she off her legs, or ass etc). This is usually enough to get men to notice her.
Whereas women who aren’t as attractive (still okay though), will probably go further if they find me physically attractive, like start an “innocent” conversation. it’s their way of saying I’m here and I like you, notice me. because putting herself in a man’s eye-line so he can see her isn’t always enough.