FIrst welcome, and second, sorry for your problems. As a bipolar II i can tell you that you have precious few choices. You can accept her for what and who she is (she is taking her meds) or you can try to "force" her to go to talk therapay. (however the abuse may be just to hurtfull to deal with). Not everyone gets better from this condition. You have to make your best decision on what makes you happy and provides for your needs. You cant live for her, no matter how much you love her it will turn to resentment in time.
Can threapy help her? Who's to say? It might make things alot worse. Try working on the simpler things first, and then build on successes.
We are all here for you anytiem you need advice or need to vent. Feel free to use us. This can be very hard to deal with, but talking will at least help you thru this.