My 13 year old step- daughter acts like she is 5 and she is spoiled and she is ruining my life. She makes me so angry I can hardly stand it. I try to talk to my husband about it and he always says he'll talk to her and fix it but it doesn't work. She won't go hang out with friends like normal 13 year olds do. She is very immature and very disrespectful. Her mom and dad won't get her in proper therapy to figure out what is going on with her. No one at her school wants to be around her because she is selfish and mean. She doesn't like to share anything.