While I like the premise of the story, I feel that it jumps into situations that the reader may not understand the how and/or why of. I also feel the there is a little too much cuteness and funny lines, and after a bit it begins to bring the story down. If you were to resubmit this to another publisher, I would suggest paring it down to a shorter story, and change the scenes to add some intro so the reader understands what's going on, and to address the other items I listed.
This rejection came on a story and it just made me feel so deflated. So the story was forgotten for a year and then pulled back out.
Two offers were made for it and it's coming out in December.
Please send your rejection stories to LoriGreenWriter@comcast.net