Meaning of girl laying hand on my thigh seemingly out of nowhere?

We were at a party, sitting together and drinking. After a few hours, when things had relaxed and we were looking at our phones, she placed her hand on my thigh seemingly out of nowhere. As far as I remember, it was near the center to inner thigh — though the memory is a bit blurry since we were all drunk. Her hand stayed there for quite some time. I just let it be; I didn’t reciprocate or reject the touch.

The thing is, before that moment, our conversations had always been completely platonic. She’s a friendly person, but not really the touchy type. So, from my point of view, it felt like a very bold move, since physical contact between us — even during conversations — was basically non-existent.

Do you think it’s worth asking her about what happened, or should I wait to see if she does something similar again to be sure? Maybe it was just the alcohol talking?

Meaning of girl laying hand on my thigh seemingly out of nowhere?
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