What do you do about a child who will not share, will not help, will not eat, will not do homework...threatens to leave home to the orphan village! or jump out the window and go to Devon - I may make light but I do not know how to handle her - should I go for parenting classes, what should I do...my other 3 are fine, do as they are told and try with everything I ask of them, even the 15month old twins.....I am at the end of my tether and do NOT know what to do...