A scenario wherein, she caught you staring her, "accidentally".

As you were drinking next to your friends, you were sitting next to a stranger beside you. This woman had 3 bottles on her table, seems like this person was a drunkard. You remained sober so, you just zoned out, without knowing that you were staring at her as you zoned out. The woman noticed you and shot you a glare.

What're you staring at, young woman?

She spoke in a deep tone, as she furrowed her eyebrows at you.