My husband & I married last fall, between the two of us we have 6 children. My 17yr. old daughter lives with her father and step-mother; my 19yr. old son is away serving in the USAF; and I have a 6yr. old daughter who lives with my husband, my 14yr. old step-son, and me--she has never had any contact whatsoever with her father, who left me while I was pregnant with her. My husband has 3 children, a 7yr. old daughter & 12yr. old son who live with their mother and step-father. The mother claims the 14yr. old son who lives with us is a problem child and does not want him disrupting their family. 
 
My step son is a good kid however he has a lot of problems that have been dumped on him by his parents and other adults whose emotions and anger have created a very sad and frustrating environment for him. We just recently moved 2000 miles from our home town, 2000 miles from my husband's ex-wife and children/my step-son's mother and siblings. He has shown incredible improvements in school, from failing to straight A's; and for the first time it seems as though he has made some friends. However the problem is at home, between him and my 6yr. old daughter. 
 
My step-son is very big for his age--6ft. 2in. & weighs more than 225lbs; and my daughter is extremely small for her age--45in. tall and weighs 42lbs. Of course my daughter is going to get on his, and everyone else's, nerves at times simply because she is 6yrs. old. The problem is that my step-son physically takes out his frustrations on her, kicking her (even lightly, with boots on, it leaves bruises due to his size vs. her small body) and pushing her.  
 
He also screams at her, things such as "shut up" and he calls her a brat and a bitch; and we have the constant issue with him giving her the finger at the same time he is screaming at her. My husband and I have told him these things are not acceptable however he continues to do these and other things without consequences--my husband does not agree with me that a child should not be talked to, nor should a child be allowed to talk to anyone, in such a manner therefore no punishment is ever carried out. 
 
Here is the latest, and to me the HUGEST, of all issues--because my husband has from day 1 hated the fact that my daughter "tattles" rather than taking up for herself (don't get me wrong, she is not always innocent and she receives punishment from both myself and my husband), she was instructed to basically be a smart ass whenever the problems with her step-brother are verbal. Yesterday my step son struck a pose similar to that of a prissy woman and my daughter called him a woman...they argued back and forth a couple of times and then, according to my daughter, he decided to PROVE his "manhood" by dropping his pants and coupling his balls and penis. She came tearing downstairs telling me what had happened.  
 
Of course his story--storieSSS--were not quite the same as the one she has told exactly the same each and every time; and his stories did not add up.  
 
My husband and I ended up fighting about the whole thing, because he does not see how/why we should pursue this issue since we did not witness the ordeal and therefore we have no way of knowing the truth. I refuse to allow this one to be put off because to me this is very serious. I suggested we take both children in for counseling this afternoon after school, in an effort to get the truth and the reason behind this latest incident. He disagreed and called me during his lunch break to inform me that we would take it up with each child separately this evening and then make a ruling as to whom we believe is telling the truth. 
 
I am certain this incident was reported accurately by my daughter, as I was home and heard enough of what went on to know it was more than possible. In addition, I asked my daughter what color underwear he was wearing and without hesitation she said Gray; and my stepson confirmed to me that he was in fact wearing Gray underwear.  
 
My husband and I fight regularly about the kids--he believes I baby my daughter; and I pick on his son. Actually quite the opposite is true. I do not place expectations nor do I deliver punishment to his son (whom I love as though he is my son--essentially he is MY child as I am his legal guardian and his father is my husband, a man I love very much and I LOVE my step-son) like I do with my daughter simply because I am the parent who is home with the children 90% of the time and after all I am his step-mother. Also, to be very honest, I think I have been a little afraid my step-son would further hurt my daughter in order to get back at me. 
 
Please help! Am I overreacting to this latest incident? And, is there any way to get my husband to realize that I am not against his son but rather we are all on the same team?