So here goes......I'm new here and not sure how this all works. I'm living with a man who has two children girl 13 and boy 9. I have two children girl 21 and boy 19. Non of whom get along. We've tried combined vacations to no avail. Most of our problems stem from his 13 year old gaughter who never seems to be happy, no matter what anyone does for her. It seems she continuously tries to cause arguments in our home.