Build up slowly, work on confidence and trust in the boat andn crew first. Never yell (unless REALLY necessary) Never curse (ever). Let her do things wrong for extended times while patiently mentioning the correct way of doing it. Then after some time has passed and only then slowly get more involved in learning (which you'll call showing) her the right way. For some reason a sizeable portion of women expect lots of time to get the hang of something. Give them that. Correcting her before she feels that she has had her time to find out independently seems to make many annoyed.

But when it starts working out it is fantastic !

Wouter