I'm not exactly sure that she was the canon romance option for BG II. I know she was such in the novelization, but very little from that aside from Abdel Adrian existing seems to be set in stone.
Minsc does mention being popular with the ladies IIRC. So it's possible he has casual relationship offscreen, so to speak.
She was. And around all of these was plotted small story with Harpers and Eliminster.