Meredith,
I don't have anything to add that has already been said. I agree with the posts on this topic. I just want to reiterate that you know your writing, and you know what you want to accomplish. Follow that instinct.
I used to send another writer (now former friend) my work, but he would edit the life out of it, suggesting changes that suited him. I no longer send him my work.
Lynn,
Thanks for sharing your experience. It reminds me of my own role when I'm giving critiques.
Marie