oomis1105:
The rav can tell her she is a Moredes if she does not go to him. Then it is her choice to go or not. She is assur for the man if he has intent to divorce (she does not enable the divorce, so her intent is not relevant).
Remember the “my Rabbi is a Rat” case? Its a similar issue on the Halachic side. She had a choice, but there are consequences from that choice.
(not to say its a good thing, but we are discussing from a strictly halachic standpoint)