Flower Girls: Best Buds by Catherine R.Daly

The flower shop owned by Delphinium Bloom's family is busier than ever. It's summertime, and Ashley - the mean girl in Del's class is having a fancy party withlots of floral arrangements. Unfortunately, Del's birthday is on the same day!
 
Will Del's family and friends still remember her big day... or will she have to sacrifice her celebrations to save the shop?