its not in my position to say if you were wrong or right. however, it sounds to me as if you are doing your very best to make her comfortable while she is undergoing her med change. my parents help me out a lot because of my bp, but sometimes i want to do some stuff on my own, and when i do, i tell them. maybe she isnt ready to tackle these challenges yet. the homework may seem trivial, but for her it could be a huge mountain to climb right now. just do your best to support her the best you can but leave some room to take care of yourself as well.
best of luck and stay well,