A Writer's Dilemma---What Do You Think?

I have a vanilla friend who has self-pubbed a couple books. She has no idea about my Celeste Jones world and books and I plan to keep it that way. 

Recently she asked me to read one of her books before she published it. Now, what I should have realized is that at this point in the process, she really just wanted me to proofread, but in addition to that, I also made a few comments about the