During our regular bedtime chat this week, Grace and I were talking about plans for tomorrow and the rest of the week. Then seemingly out of nowhere my little girl suddenly burst out angrily...  "Sometimes I think Nathan has more fun than me!"   She started sobbing "When he's playing something fun, I feel sad when I can't join in!"   I knew it was not true that Grace is excluded from playing with Nathan. My two kids love playing together all the time, and my little girl absolutely adores her big brother as much as he dotes on her.  "Why do you say that? Did something happen today?" I prompted, trying to figure out where this was coming from.  "Well... not today, but one time! Like playing Star Wars!" "I thought you guys were playing Star Wars together yesterday? " I clarified.  "Okay... maybe not Star Wars... but other times... Like when he's playing Lego..."  "Can you tell me what happened?"   "I ...