I feel like Chiasa could fake sober for a very long time, but when she's had that one drink too many? Could jump the nearest male, but could also wind up the stereotypical clichéd PMSing woman. IE, out of the blue WRATH or tears or everyones best friend, all of which could change super quickly. Also might just go fall asleep somewhere. I think it would depend on where she was, the company and what was going on in her life at the time.