My Mother Was Diagnosed With Aortic Stenosis A Year Ago

My mother was diagnosed with aortic stenosis a year ago and it has gone from mild to moderate to critical. She is in a nursing home after a fall that broke her back and has since had surgery. She is 83 and showing signs of dementia or early Alzheimer's. Today I found out they put her on Flexeril for muscle twitches. My fear it she should not be on this due to her heart condition.