Dear Elizabeth,
It sounds as if your mother may be developing a more chronic form of percarditis it is important to have her condition followed by her cardiologist to make sure that she is not developing a thickening of her heart wall due to this chronic irritation. This should be reevaluated with an echocardiogram. I would recommend that you speak with Dr. Allan Klein here at CCF for further evaluation if you are interested in a second opinion.
Thank you for sharing this. Aspirin and ibuprofen are often used with physician supervision for this condition.