A/N- A note on ages: I've made Evan the same age as the Marauders for the purposes of this story. Narcissa is therefore around 11 here and Bellatrix about 15.
Chapter 2
Narcissa watched with a smile as Evan obediently covered his eyes with his hands and slowly began counting. She crept into the silent dining room and concealed herself behind one of the floor-length, dark-green curtains, standing perfectly still.
"Cissy, what on Earth are you doing?" snapped Bellatrix's voice from the other end of the long room. Peering out from her hiding place, Narcissa realised her sister had been sitting in an armchair against the opposite wall reading as she had come in, her dark eyes now narrowed suspiciously over the spine of a leather-bound book.
"Um... I was just," Narcissa mumbled, suddenly feeling very foolish under her sister's intense glare, "I'm just playing hide-and-seek with Evan."
"And what might that be?" Bellatrix asked nonchalantly, turning back to her book, her look of suspicion replaced by one of boredom.
"It's a game that Mugg-" she began before slamming her mouth shut. "I mean it's just a game that I saw some people playing," she said, trailing off weakly, but her sister wasn't fooled,
"You're teaching our six year old cousin a Muggle game?" she hissed incredulously.
"Found you!" Evan's excited voice came from the doorway, where he stood pointing happily at Narcissa. "Now I get to hide," he beamed.
Bellatrix grimaced in distaste.