AN: Written for the Pocket Morty Competition (Triple Morty: Write about three siblings)
"Bella, is this really necessary?" Narcissa sighs.
Her sister doesn't bother with an answer. Narcissa hadn't actually expected her to. Once Bellatrix has made up her mind, there is no room for questions or protests.
Narcissa follows behind, however grudgingly. "At least knock," she suggests.
Again, Bellatrix ignores her and pushes open Andromeda's door. Narcissa offers Andromeda an apologetic smile as Bellatrix waltzes inside.
"What's this about?" Andromeda asks, folding her arms over her chest. "You've got that look, Bella."
Bellatrix scowls. "That look? Which one? The one that says my sister is getting too friendly with a Mudblood?"
Color floods Andromeda's cheeks, but she stands her ground. "That's what this is about? My love life?"
Love? Narcissa looks up at that. She, like Bellatrix, had assumed that Andromeda's fascination with Ted Tonks was little more than infatuation. "You love him?" she asks.
"I do."
Bellatrix hisses. "You're making a mistake, Andi, choosing him over us. He's a Mudblood. He'll use you and leave you."
"He loves me."
"We love you. He only says he does," Bellatrix says sharply.
Narcissa swallows dryly, shifting her weight from foot to foot. She hadn't expected this to go so far. She hadn't expected Andromeda to be in love, or for Bellatrix to offer her a choice. "Bella, maybe we-"
"Quiet, Cissy. Don't speak if you aren't adding something useful to the conversation," Bellatrix snaps, and Narcissa falls silent once again.
Andromeda huffs. "You claim you love me. But look at the way you speak to our sister. She isn't even allowed to have an opinion if it differs from yours."
Bellatrix draws closer, her hand twitching toward her wand. Narcissa stands frozen, looking from sister to sister, wondering what to do if a fight erupts.
"Get out of my room," Andromeda says sharply.
"You'll be out on the streets once Mother and Father find out," Bellatrix laughs. "Then what good will your love be? What's love going to do for you when you're homeless and begging?"
Narcissa notices the ring on Andromeda's finger for the first time. "Oh."
"I'm leaving soon," Andromeda answers simply, backing away, though her gaze is still hard on Bellatrix.
"Ted and I will be married."
"Mark my words, traitor. You're making a huge mistake. Come along, Cissy." Without waiting for a response, Bellatrix storms out the door.
"Congratulations. I'm sorry," Narcissa says softly before turning and following her sister out.