I have been with my husband for almost 8 years. When we got together my sd was only 3 & was tolerable. I have two kids of my own from a previous marriage & we have a daughter together. He has two kids from his ex. I also have a step-son that is autistic he is 14. I adore him! His sister is always very disrespectful & rude! Don't even get me started about BM! I bite my tongue so much I am suprised I still have one! Any & all advice how to deal with a preteen Monster would be helpful.