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.
This blog shares insights on the craft of writing children's books and the publishing industry, and supports creators and educators on their journeys.