Even if you don't visit with her, go to the building, talk with the doctors/nurses, send her letters. If she will not take in your love today, tomorrow she has evidence of it. Your support is not for her sake, it is for you. It is a statement of your love.
I am untreated at this point. I would like to be, but none of the meds have worked for me yet. I react to them badly. I know that I am terrible to my husband, but he loves me, and even when I brought up divorce he just said, "when is your next appointment?" and never mentioned it again.
Be there for her, and she will know.
When you cannot stand, on whom do you lean?