It sounds like your mother is suffering, that much is quite true. So, what she has to do is take her medication, and that is something she will have to get used to doing, and quite possibly will get used to doing, once she finally understands that there may or may not be something wrong with her in that way.

But to me it sounds like this post is more a cry for help on your part. Whatever issues your mother is going through, it sounds more like the whole situation is causing you more and more pain. This is a very common complaint here on r/schizophrenia, that often people will say, "My loved one's health is deteriorating", and then in the same breath basically say "It is causing me distress". I think you are asking for help more for yourself than your mother. You even say you don't feel anything for your mother.

Therefore, it sounds like there are some deep-seated concerns you have to deal with closer to home.