You want to take the chance you've got.

Like, really. Waiting around doesn't make you better at talking to people.

In a logical perspective, you being around her too much with no signs of interest (as I'm sure you're a shy person and exhibit not intended leaked shyness to her), she will see you as someone who is not interested, so best make SOMETHING happen now.

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"Only the Dead have seen the end of War."
- Plato