Ceilidh the Instigator

Ceilidh is our beautiful middle child, currently. (I say that, because, who knows what the future holds, and Devlin is campaigning for another sibling, but that's a story for another day.) As the middle child, she has gone from having all of one parent's attention when there only two, and "divide and conquer" was the parenting tool of choice to having to share her parents with her older brother and her younger sister. She idolizes Devlin, which is apparent in how hard she tries to keep up with him. She also inquires about his whereabouts, his well-being, and will do whatever he does, save and except for take medication without argument.
Lately, Devlin has taken to stating "I'm not your son" when he's upset with Mommy and Daddy because, horror of horrors, we've made him take a bath/brush his teeth/turn off the television/ etc etc. We responded by calmly answering, "Okay. If you're not our son, we better take you back to the hospital and find our real son!" Devlin, now caught in something he started, has to decide whether or not to follow through with the request that he put on his shoes and get ready to leave for the hospital or acknowledge he's in the wrong. Meanwhile, Ceilidh is in tears. She starts to howl, "No, don't take Devlin away. I want him to stay here and be Devlin!"
It's quite touching. But she's also an instigator who will push and prod Devlin to a reaction. Over the weekend, Devlin and Auntie Grace were cuddling on the couch while watching some t.v. Well, Devlin was watching some television and Auntie Grace was trying to nap. Ceilidh, not wanting be left out of any fun, decides to play music and dance to the tunes, while waving her hand held windmill, and every so often, tapping Devlin "lightly" on the knee with the windmill. When she was blocking the television screen with her dancing, Devlin would ask her to move. She would oblige by turning sideways, for a very brief moment, and then return to dancing in front of him and tapping his knee.
To Devlin's credit, he has yet to retaliate in kind with his younger sister, despite the fact that Ceilidh quite literally will get in his face. Last week, Devlin ended up with a broken blood vessel in his eye, courtesy of Ceilidh. Although, that was due to horsing around on the bed, after mommy repeatedly told them to stop.