Bipolar girlfriend help

we had an on off thing for almost a year before I got tired of it and said enough was enough and askef her to lose my number. A few monst passed wnd I heat grom her out of the blue, long story short we're back together. In that first year I got VERY good at judging her mental state, but ive never had any idea of how to help or even what to do when shes in her manic or depressive swings. In addition to sll this I recently was diagnosed with aspergers so I do have my own issues. I would love some tips on dealing with her manic and deptessive swings. Btw she is medicated and they think yhey found something that works but she occasionaly gose off them.