It is my understanding that it is difficult to abuse methadone. Apparently that is why she is on the vs
another opiate. She should not be experiencing any high or euphoria from the methadone. It doesn't work that way. 200 mgs is a significant dosage so I am assuming that you are talking about her oxycodone
Two things could be happening as I am sure you are aware. Her medications may be ineffective in controlling her pain or she may be abusing her medications.