As a person with a psychiatric illness myself, I would strongly second Firekeeper's admonition to have her keep taking medication.
Her condition is a result of a chemical imbalance in the brain, and no amount of Reiki is going to change that. It may relax her, but it is certainly no substitute for psychiatric care.
I would also not mess around with herbs or any other "natural cures". It's too risky, and the consequences are too dire. So far as I know, no one has come up with a way sucessfully treat such illnesses except for medication.
Blessings,
Roxy
