Husky killed neighbors cat!!!

My first time posting... My 11 month old husky (female) got out of my yard last night and attacked my neighbor's cat. Sad to say the cat died, I feel terrible. The neighbors called animal control and animal control will keep the dog until they are done with their investigation (about 3-4 day). I don't know what I should do next. My dog, Raven, is a good dog. This is my first time dealing with this type of behavior. I blame myself because I left the dogs (we have another husky and a german short haired pointer) out in the yard unattended. Our yard is fenced in and I didn't think that she could get out. My husband is thinking that we should find her another home. She has chased cats out of our yard before but this is the first time she has hurt one. Sorry if I am all over the place... I feel bad for my neighbors and I don't want to lose my dog.