Mary Kole is now providing consulting and editorial services for writers. Check her out! http://marykole.com/.
I've been impressed with her picture book and MG webinars through Writer's Digest as well as her blog at http://kidlit.com/.
If you are thinking about retaining her, you could take her webinar which includes a critique. Then, you'd get a sense of her editorial style AND learn about craft.
Carrie Pearson is a children's book author and creator-cheerleader.