this is a rough combo , that's a high dose of tricor and a statin to take together and if you read the literature they specifically advise against taking both of these together and I'll guarantee this is why she feels so bad , at the very least I would get rid of one and even stop for a little while like a month and see how she feels . Only you can make that decision specially if your doctor won't go along with it , it's her body and you have to have some sort of quality of life and if this stuff is killing her it's not worth and other alternatives should be looked at . Below is a specific warning on tricor about mixing with a statin , don't do it .

HMG-CoA reductase inhibitors: Rhabdomyolysis has occurred when lovastatin was administered in combined therapy with gemfibrozil, a compound of the fibrate class related to fenofibrate. In most patients who have had an unsatisfactory lipid response to either drug alone, any possible benefit of combined therapy with an HMG-CoA reductase inhibitor and TRICOR is not outweighed by the risks of severe myopathy, rhabdomyolysis, and acute renal failure. There is no assurance that periodic monitoring of creatine kinase will prevent the occurrence of severe myopathy and kidney damage.