Funny how people are naturally lucid dreamers and yet don't know how epic that is. Of course reoccuring dreams may get boring after a while and if you get stab every night for a year or so without bleeding then of course that would become a giant dream sign. She said it herself that she only know she is dreaming because of the same dream. So she may not be a natural lucid dreamer, just a dreamer with a good dream sign.

You could help her out by getting rid of the reoccuring dreams if she want to get rid of them or just show her the forums so she can help others out.