Here's a thought....ask the women in the women's forum.
What are her goals? Var is different for women then men. Is she eating properly? How old is she? Does she have any idea what the risks are or potential side effects?? It's irresponsible to throw her on something without even knowing the potential risks and like some of these guys have said, the sides can become permanent, even from var.
Call me what you want but you clearly don't know what you're doing and your gf will pay the price. If she was responsible, she'd be doing her own research.
Var won't impact the pill and if you keep the dose at 5 to 10 mgs she won't need to do anything after but may have some hormone disruption for a few weeks after ie: monthly cycle off, moodiness etc.
If she has more specific questions, she can always pm me too. Most women will gain some weight on var too... Which is usually the idea... Gaining muscle.