Oh my goodness Knipper, I want you beside me in a fight, any time! I hate to think how badly Cricket would have been injured if you had not turned into a Ninja and wrestled the huge attacker. Hats off to you, and for keeping him till owners could be found.
Hugs to Cricket, use the pain meds to keep her comfortable. When Chipley was attacked at the park several months ago, he was very timid and stayed close to us for several weeks and shyed away from large white dogs. We tried to stay relaxed and comfort but not coddle him and eventually he started playing again but still gives white bull-type dogs a second look and avoids them if he can. Hopefully Cricket will bounce back and be her happy, normal self again soon.
And yes, unless there is a human injury, the police have more serious business I'm afraid. Animal control may think differently and give them a warning at least. And hopefully you get your vet bill paid too!