<human>: Can you provide a brief rundown of the text in within 3 sentences?

So im hanging out at the bar she works at, having some drinks, and some real sketchy guy comes up for a drink. Mind you, this place is notorious for drug dealers and sketchballs galore.

 He starts conversing and talking her ear off for a while, which is weird for me because she barely talks to me when I'm visiting her. I digress. 

Anyways, she goes for a 10 minute break and I see this guy across the bar writing on a piece of paper the whole time. She comes back, he says something to her and hands her the piece of paper and then leaves a couple minutes later. 

Meanwhile, I'm hanging out with a friend and wait to bring it up. I finally mention something lightly and said "so what was that business all about?"  to which she shrugs off and said something I couldn't understand along the lines of "I'll tell you later"  or "nevermind"  and laughs it off. 

I don't want to cause an issue; I'm just curious what it was. Would it be weird for me to bring it up again? If it gives any perspective, she's on her period and a bit testy right now. 

Point being, do I ask her again? Or do I leave it be and let her bring it up to me if she so feels obliged?
<bot>: bartender gf receives a long written note from a sketchy customer. I casually asked about it, only to be dismissed. Do I ask about it again? Or leave it be?