I have a sister that has twins, boy and girl. They are 19 months old and are terrors!! They scream to the top of their lungs, they bite each other, they bite their Mom, they are always into EVERYTHING!! They do not travel 2 hours in a car without screaming the whole way cuz they want their mommy to hold them, or take them out of their car seats. She tells them no, no, no because they are into everything, they don't listen. She tries to redirect them, but they come right back to what they aren't supposed to do. I don't know what to say to her, because I never let my children act this way, and I don't want to hurt her feelings, but her kids are brats, and I don't want to be around them because it just makes me want to discipline them myself, and I need to let her be the mommy she thinks she needs to be for her children. Any thoughts?