My stepmom tried to...????

You need to def let ur father know hows she's treating u when he's not around.Cause obviously that's the real her when he's not around.Also don't apologize to her let it be until your Dad handles it.Stay cool,calm,and collected.Just tell him exactly what happened b/w yall and tell him you'll apologize as long as she does too.Fair is fair and respect goes both ways grown or not grown.