Meditation can benefit anybody greatly. The LW herself would certainly benefit from it, but I wouldn't go so far as to say it would be able to completely solve her problem. It sounds like she may suffer from a genuine chemical imbalance.

But again, regardless of whether or not meditation could completely solve her problem, it most certainly would help and it's much cheaper than a doctor. I would definitely recommend giving it a shot, but I have to temper that by saying I would recommend it to anyone in any situation. It's like recommending a balanced diet, you can't go wrong.