It appears that all of your mother's problems are the result of connective tissue
disease. Even the stroke
is likely to have been caused by connective tissue disease. So, in my opinion, the best person to treat her would be an experienced rheumatologist
. Rheumatalogists specialize in the management of connective tissue diseases including SLE and rheumatoid arthritis
. If these are adequately treated, I feel that your mother will definitely perceive a significant change in her quality of life. This will also reduce her risk of suffering from complications like stroke in future.
I hope this helps her. Best wishes.