How old is Daisy? pit bulls usually don't mature until they are 2 years of age dog aggressive wise. sometimes when they mature they don't get along with other dogs and your mom yelling probably added fuel to the fire and your brother throwing the shoe probably didn't help either. do you have a crate to put Daisy in while you're not able to watch her? I am sorry this happened.. but are any of the dogs on NILIF and YOU need to show them that you are the alpha and not any of them. you have to be top dog in your house and I would start NILIF.