I don’t want to alarm you as it seems you’re in a tough situation already… but can you check the name on the prescription bottles? If the name is yours, I would suggest contacting her doctor immediately and asking if you should be taking the pills. If they tell you yes, I would urge you to follow their advice. It may be that the pills are meant to help you deal with your wife’s… ah… changes after her trip and she’s just got you confused about things.