Do you have a pulse ox to check her oxygen levels? Some meds do make you forget but hers sounds bad. I went through the same issue where I wasnt remembering anything I would say something and then repeat it to the person every 1 min. and I didnt remember I took my meds so would keep taking it so my mom had to take it away and give them when was able. When I went to the hospital they found my oxygen was so low I wasnt getting enough to my brain so didnt know what I was doing, I was even running out into the middle of the road and acting like I was 3. I had what was called hypoxia (not sure if its spelled right). I ended up being diagnosed with sarcoidosis where granulomas grow in the lungs. Checking the oxygen is just an idea, I was doing what she was for 5 months before they found my brain was being deprived of oxygen. Sorry for what both you and she are going through and hope you can find help. other issues that can make it happen that made me forget to was low thyroid or hypothyroidism, and very low potassium
Iam very sorry, I know it must be hard on you, you need to find a doctor to figure out whats is the absolute cause for it because your wife just doesnt understand what she is doing or know she is. I know I put my family through hell for the 5 months from running out into the highway, throwing my open pills at them, repeating myself over and over again. Even in the hospital I had to be watched by a nurse in my room cause i would keep getting up and trying to leave my room not knowing what i was doing, i even threw my meds at them and because i couldnt remember when I got my pain meds I was ringing me nurse bell every 5 min to get my meds and they kept trying to explain I got it and I would get mad and yell. I dont remember any of this but they tell me the stories and i feel so bad what i put my loved ones and the nurses through. In the begining my mom blamed it on my meds too but found out it had nothing to do with it and was something more serious, I was just lucky they got me oxygen before the loss to my brain was permanent that would be scary. Since she isnt remembering watch her taking her meds cause like me I was taking them every 10 min because I thought i hadnt so my mom had to control them. I wish you luck and hope you find an answer.