Your Daughter does not need anything other than some help with her behavior I doubt for one moment you need to take it to any extremes ,children need better Parent/child interaction. Children often get into this Bossy phase and you could act before it gets out of control, separate them and make sure they are busy with activities, you could also explain to your daughter that if she is not "nicer' to her friends you will not have them over to play, and mean it. Next time she is mean send the friend home and tell your daughter she can come back when she is "nice' to her .
Hi there. I have a bipolar kid (boy age seven). For all he has going on, he is pretty well behaved most of the time. He can get aggressive (only at home) but bossy with friends. Explaining how to deal with friends usually helps (we are still trying to work on the mood swings at home). However--we always hear about everything being "unfair." The thing about this is that when a kid showing this kind of behavior (bipolar, normal or not) they use the words like "unfair " and "stupid" to excuse themselves from following the rules the rest of us live by. We fight this constantly, and you must nip it in the bud. Defiant children have this sort of behavior--they may have deeper problems or not--but you still have to make them accountable for their actions in every way--whether they have a a disorder or not. We have used Dr. Kadzin's book Parenting the Defiant Child, which I mentioned in anothe post tonight It i a very good book and I have read dozens. Another we tried was called You Can't Make Me. Helpful when he was younger, but we needed a program for more serious problems. Right now we are working thru James Lehman's Total Transformation program. This is expensive (you can find it on Ebay for less than $300.00--but boy his this helped me understand the mind of a dysfunctional kid. It focuses on controlling disrespectful, obnoxious and abusive behavior. He is a social worker and I find clinical social workers are more in the "real world" about behavior than the psychologist we tried. In any event--you need to get help right away. If you can see a clinical social worker with your health insurance, then please do. However, even if you don't have mental health coverage--clinical social workers (find one that works with kids) charge $40-$50 per hour. That's far cheaper than our (former) psychologist who racked up $125 a visit, and told me over and over that there was nothing wrong with our son...The psychiatrist was wrong, etc...kids can't be psychotic or have bipolar disorder when the are so young. Yeah--okay.
Good luck. Please get help before you have your baby. After the baby is born, do not leave it alone with your daughter. She may be a wonderful child, but she may have impulses she can not control right now and may hurt her sibling without meaning to.