Accidental footsie?

I was kind of flirting with this girl sitting next to me at a party. Later on I accidentally placed my foot right on top of hers. She didn´t flinch or pull her foot back though, so I just kept it there - felt good you know.

If she wasn't into me at all would she have pulled her foot back? Or did she keep it there to be kind and not embarrass me?
Accidental footsie?
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