Really honourable of you, you've taken you wedding vows seriously, in sickness and health.
Sorry it's been so rough for you both, and you coming on here shows how supportive you are also. I think in regards to wife your probably doing all that you can. So what else can you do, look after yourself also, take a break, chill out for few hours, take mind of it. so you have strength to look after her.
In regards to Mede, you may have to count them or take them and give them to her before you leave for work, if she allows that, just like they would in hospital. And then you can be sure she takes them. Keep on the forum and look after yourself, all the best to you and your wife.