Sorry to hear about your husband, that's a touch situation to be in.
There are already excellent suggestions here so I won't repeat them. The best thing you can do is take care of yourself first, so that you can take care of your husband. There's a reason why on airplanes they say to put on your own mask before helping someone else.
The black top paired with your silver hair is a striking combination, you wear black very well! The necklace and the leopard sneakers are a dash of fun to a casual outfit. You're looking great in retirement!