J.A.
Hi K.,
I agree with you it does sound concerning. I also agree that the cousin is probably not someone whom you want your step daughter socializing with. A two year age difference at that age can be a huge difference maturity wise and if your step daughters main influence is an out of control cousin, you have trouble on your hands. I don't know how well your relationship with your step daughters mother is but if it is good a non-confrontational, non-accusatory, meeting would be in order to set some ground rules for behavior, dating, socializing, etc. If will definately help if everyone is on the same page with expectations from this young lady! Having different homes with differnt rules can be very confusing. Also her mother is going to have the primary influence because that is where your step daughter lives and goes to school. Educating yourself on prepubescent female behavior is also a great idea. I recommend Saving Ophelia--Saving the Selves of Our Adolescent Girls. This is a very influential time for young girls and their self-esteem is very fragile. Assume you will make mistakes, but if she continually feels loved and valued at home you have the best chance of winning the war if not every battle. Best Wishes!
J. L.