My situation is probably not near as bad as msny. I have 16 year old Bs. 16 year old SD and a 10 year due ss we hardly ever see. (I am my husband's 3rd marriage. He has 2 kids with 2 different x wives. I cannot stand the every other weekend we have his daughter. It makes me feel like a terrible person!! I am a nice patient Mom. Used to teach preschool for many years. I have never spanked or went off on my child or anyone elses.. SO Why do I feel so awful when my SD is around. I practically shut completely down. She is a nice girl, pleasant gets good grades.