When we got Simba, he bit my mom twice. He'd growl when she came near or when anyone beside me came near. He doesn't like men either. But you know what? Did that stop us from keeping him? No. WE worked with him. WE got him over it. Let your brothers feed her, let your brothers walk her, let your brothers give her treats. That's what we did with my mom and Simba. A dog is not something to just get and then throw away the next day. You know how confused she's going to be? And I know it's not all your fault, maybe you should let your parents read theese posts instead of you and taking them personally. Maybe befor getting another dog, go to the pound 3 or more times a week like i do, looking petting, hugging, playing with all of the dogs. Maybe if you're old enough you could volunteer there and help out with them too. That way you'll get to know the dog befor getting it and having to take it back the next day.