I think she doesn't believe there is a chance for us, even if she wanted to fight for me. And she says I deserve better?
I told my H he deserved somebody better, also. It was said during a time I was falling apart and feeling so bad about myself.
I have not dealt with bipolar on a personal level,but dealing with depression is bad enough. And, yes some of the AD meds will certainly affect the sex drive in a negative way. I don't know about reversing it. I would think from what little I know about bipolar, she would have to be on meds to have any balance in her life and for you all to have any sort of normal family life.
It is very difficult to reach a WAW in the fog--but being bipolar makes the chances seem more slim. That is why I believe she needs a doctor to help her. You could talk until you turn blue but it may not do any good. I'm just saying that it makes it more serious having the bipolar, IMHO.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!