She was mad because she never got adopted and that she was pure wolf, but she doesn't believe it. So, she runs away to find 'who she really is'. I'm pretty sure you would get mad ilke that if no one adopted you.

Hope that helps^^

She got mad at her father from keeping the fact she was part wolf from her her whole life (which was a full year) and not telling her just to protect her which she would of rather of heard earlier to get over the fact no human will ever want her. She basicly reacted a way a child would if they're told they're adopted half way through their life, Devastated they weren't told earlier and confused/upset.

Maybe because Balto had always hidden the truth to her. Or maybe she was just angry about the situation, and she attacked the first one that came to hand.

Yes,it was because she looked like a wolf,and she was different to the other pups,also Balto never told her of her wolf heritage,until a hunter took aim at her,and tried to kill her,but lucky for Aleu,Balto came just in time to save her.

-Celtic Kate