My Dog Bit A Child, What's Next?

My husband was walking our 2 dogs when a group of children ran up to our 2 dogs screaming "can we pet your dog?" My husband responded "please don't" multiple times and they proceeded to approach and pet the dogs anyway. My husband repeatedly said "please dont" because our older dog (70 pound husky) gets nervous around groups/loud people and our other dog is a 3.5 month puppy that is not well trained yet and constantly nibbles. They proceeded to approach and started petting both dogs. My husband was more concerned with watching the puppy since this was his first time walking both dogs alone and wasn't sure how he would react. As this is happening, another child comes up and grabs our adult dog from behind. Our dog then turned around and bit the kids lip.

It was one quick snap but the kid started bleeding. There were no adults paying attention to any of the kids. My husband had to yell "who's child is this?" His parents ran up and started yelling at the child saying " I told you not to pet the dog". The parents were calm and understanding, my husband gave them his information and vet records.

We just got a letter from a lawyer asking for our liability insurance and animal control is coming to our house on Friday. What can we expect from here? I understand we are probably liable for medical bills but this is extremely frustrating because he repeatedly asked the kids to stop and there were no adults watching the kids.

Location: Columbia, Maryland