Treat her like a normal person. You can't go wrong with that. If she's in a manic stage she's really up. As far as work I would try to get her on one task at a time. My Mum is bipolar and in manic stages she has a tendency to spread herself thin, starting many projects but never finishing them. Also make sure she takes her regular lunch breaks and whatnot. If she's now being medicated I assume she'd not as out there as some folks get but alot of times in a manic stage a person with this disorder will forget to do simple things like eat or drink.

I've been in a psyche ward with people who were newly diagnosed or those thatdecided to go off their meds it's definately an experience but if she's getting help she's on the right track. It's probably just a matter of finding the right drug 'cocktail' to keep her symptoms under control.