The Bully....

Hailey has been having a bit of a hitting problem recently and we have been dealing with it but it is making it hard to go out anywhere with her in public for the fear of being judged because she is the "bully kid"...which Hailey definitely is. She will go up to the other kids and just flat out smack them for no aparent reason. Probably just to see the reaction take place. At our most recent playdate I think she hit every kid at least once. It totally looks bad on your parenting. I just need some help...advice...anything you've got, to try and help me work through this. The playdate we went on was with all the little babies who have been born of our NICU nurses within the last 3 years (yes...we've been popping them out!) We've had a lot of fun hanging out and watching the kids learn and play and grow up together.
The picture I added is of all the NICU mom's and their baby's taken by some very nice lady at the playground.

Lets see if I can label it from left to right:
Jessica with Jordyn and Kiley: Tina with Avvon and two more on their way :) TouTou with her son Drew: Sara with her daughter Jaidyn and one more waiting to come out to play :): Val with her son Andrew: and then me with little bully Hailey Jane. Ella didn't want to take the photo so her little head is right behind us a bit.
So, all in all, it was a really fun playdate and nice to catch up with everyone (outside of work) I just wish that I didn't have the bully to deal with. Truthfully, any advise that people have for me and I will be all over it!!

ps: Please try and ignore any spelling or grammer mistakes. I'm writing this after a 12 hour night shift, and falling asleep while I am doing it!