My mother in law told me at a bridal shower today that I would be watching my 2 difficult child nephews this weekend because my sister in law needs a break and my mother in law has a party to go to. I lied and said I had plans that I couldn't break but honesty I just want this weekend to breathe. With school and soccer for my difficult child and pcs, this is the LAST Saturday that I don't have something going until almost Christmas. The sister in law who has the two difficult children is babied quite a lot in my opinion and this is the second time in a month that I have been asked to keep her kids so she can have a break. Am I being a jerkface by not adding stress to my life just to make others life easier?