Rheumatic arthritis after 12-15 yrs.

Hello, My mom is suffering from Rheumatic Arthritis since many years. Initially we went to orthopaedic docs and did many treatments that did not work. Then we found a RA doc, under whom treatment is going on. These years treatment went well. My mom is able to walk fairly. But this year, she hv started getting unwell with other issues.. she is no 58yrs. She have started getting IBS kinda issues in last one year. Gets fever sometimes. Got eye passage blocking issue since one year. Other than this.. she have no issues like diabetes or blood pr or anything. We need a doc, that can explain her disease, what other problems can we face and what tests shud we perform regularly and what shud we do to maintain ourselves?