I hope you take all of our advise into deep consideration. We all have bi-polar and are working hard to keep ourselves in a healthy place or there are people here who are like you and are married or in a relationship with someone who has bipolar. We are here to help you.
In my opinion and as others have already mention to you is that you need to get your wife some serious help. You need to contact the doctor that is prescribing the medication to her and tell them exactly what is taking place. They will direct you on what you need to do.
After that you have to demand that she starts to take her illness seriously and get herself some help and continue to keep it up or you will leave. Tell her you will not tolerate that type of behavior anymore and that NOBODY deserves that type of treatment.
If she starts to manipulate you in anyway and put this on you, (which will most likely happen) you have to take a stand and leave to keep yourself healthy. Don't put yourself through this. When most bipolars are unmedicated and not consistant with their medications and appointments/treatment plan, life will literally be hell for you. You need to confront her with this ultimatum. It would be in the best interest for YOU and her.