Many moons ago, I was taking my CFI ride. I told the examiner to pull the nose up. He prompty pulled the nose right up into a stall. He then turned, looked at me and told me "You told me to pull the nose up".

You need to "draw" the sight picture for her. Tell her where you look and when you do it.

Second issue: confidance Is she safe to be checked out? Her landings don't have to be perfect, but they have to be safe. When you're comfortable signing her off, suggest that she go practice landing herself. It sounds like she is aware that her proformance isn't the best. The folks that scared me the most were the guys that didn't have a clue that they were subpar. She may be deferring PIC duties to you because you're an instructor. Tell her that you want to see three full stop, taxi back landings in a row. The next part is tricky. Don't say a word, a peep, nothing. Don't do anything, unless the plane is going to crash. Let her "figure it out". You're doing this not to be an ass, but allowing her to asert herself.