I wouldn't advise it, especially depending on what she is actually taking remicade for.
Ecstasy could cause a flare of an autoimmune disease, and has been shown to activate a particular immune system cell in animals (microglia, implicated in MS).
In addition, ecstasy can put a lot of stress on someone, and there is a big connection between stress and autoimmune disease.
Getting bunk ecstasy can be a disaster for some people. Make sure to test the product thoroughly.