Great Grand daughter

I have the most wonderful great granddaughter!  She is four and a half  going on fifteen!  I need to follow her around with a video camera!  The other day she got upset with her friend who stays with us a couple afternoons a week.  They are completely different personalities, with the friend being much more competitive than my Anaila.  Anaila comes marching in, hands on hips, stops in front of me,      " This friendship is at an end"!! Walks over to the couch and flops down. Where she heard this I don't know.  I have a very hard time exerting ANY discipline on her, I'm laughing too hard!!  Well now, not to be left out, her two year old brother has  started to show his own personality.  He comes in, stops by Papa's chair, looks right in his eyes and says,"Iwannaing"!  The translation: "I want to swing".  He cannot get into his seat alone.  He would keep someone, anyone, constantly standing behind him, pushing!  Problem is--if he is any at all sleepy, off he goes!!  He cannot resist rocking or swinging when he's sleepy!!  Good to know, hunh?  Naptime!!