She Likes You Because You're a Guy That She Knows

A woman coming up and grabbing your hand is usually a good signal of attraction, but you're wrong to take it as a signal of attraction from her in this case. If there were maybe one or two touches in a club under those conditions, balance that out against her failure to reply to maybe half a dozen specific invites to a coffee date. The silence speaks way louder than words in terms of her non-response. There's no such thing as something where it's like, oh, X always means Y and sex and dating. Everything is contextual.