It's interesting that students are so willing to relinquish the hours of work they've put into a paper into the hands of someone they've never before met. I could give her poor advice; I could tell her to change a word or a paragraph and she would agree. I wonder how to instill more confidence into a writer while, at the same time, helping them improve their writing. Whenever I make suggestions to an ESL writer, their confidence seems, at times, to diminish. They see my corrections or confusion as a sign they are incompetent or stupid. In reality, they're just learning. I suppose helping them change their attitude about their progress, that even though they're struggling they're still doing fine, would be a good first step for them to see that struggle as part of the learning process and not a sign of failure.
Unfortunately, this thought is just a thought and is not yet converted into a plan of action. I don't know how to instill confidence in someone if they're writing is so rough I can't understand it. I guess just pointing out what they did well is a good start.