I think I recall you saying you don't want to interfer with her meds (do I remember that correctly?). Well, let me say this as simply as I can....this may be one of those times you have to step in and be more forceful about her doing something about it. Med side-effects can be a vicious cycle....if she's sleeping a lot, doesn't feel she's emotionally available etc.....I can easily see where she might not feel very "motivated" either, and that I don't believe has anything really to do with you or her willingness to help with the R. I think that has a lot to do with the meds.
IMPO (take it FWIW)...I think you need to phone her Dr's. office, make an appointment for her to go in....and go with her. And by that, I mean go to the office and talk to her Dr. with her. If you don't think she's giving him a clear picture, then you make sure he has one. Afterall, those meds affect you both. Sure, she may be the one taking them...they may be helping a condition of hers....but the side-effects affect you both....and she may not be seeing what you see.
Are you hoping she's going to step up and take care of this on her own? If so, it's my guess because her motivation is affected....that she won't do it. This is one time (along with seeking a couples therapist) that I think you need to stand up and put your foot down.
I would hate to see a medication taking drastic tolls on your M when it doesn't have to. She may need you to take control in this situation. That doesn't mean you're being a bully or being controlling....in many ways, as far as the meds go, you are looking out for her best interests too.
