Since you chose not to tell us anything about what she accused you of, I can't tell you how to prove she is lying. More important is how can you prevent this EPO from impacting your career. This "sport" of using Family Court restraining orders to trash someone's reputation or career out of spite has become a national craze and amazingly, the Courts and legislature are oblivious to it. Yes, they do hand out these EPO's like candy, and the consequences to the victim can be devastating, and yet the law provides no remedy for sealing or destroying court files that are later proved to be based upon slanderous fabrications.
The only help I can offer you is that if her accusations result in your arrest, you can get full sealing and destruction of all records of her accusations through a factual innocence petition under Penal Code Section 851.8, but not unless you are arrested. I have recently succeeded in getting a Family Court EPO ("Emergency Protective Order") file sealed and destroyed this way.
You need to get to an attorney immediately. You have to have witnesses or some other way of proving she is lying. Was anyone around at the times she says you did things to her? What about your co-workers, can they come in and testify that she has been spreading rumors? That shows she is not afraid of you. A temporary restraining order is easy to obtain, since it's based on an emergency. A permanent restraining order must be proved.
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