Ariadne loves her symphony. She loves how they sound together, and she loves how her star players have all become her friends. In the music world, she's learned that sometimes a prodigy like her can be shunned from the regular players.
She loves them so much, she doesn't mind the jokes her best Trumpet player Eames makes about their piece, "Erocia." She doesn't mind it when her Bass player Cobb gets her Oboe master Mal pregnant. (Even though she kind of had a crush on him.) She doesn't mind it when Arthur, the best Violin player she seen in years, stays up all night perfecting a part and falls asleep during the next days rehearsal. She even doesn't mind it when their owner, Mr. Saito, shows up unannounced with a new Timpani player that she has no choice but to put in. But Robert turns out to be a nice kid, so she loves him quickly.
The rest of her symphony thinks she plays favorites, but she doesn't. She loves her symphony, and all her players. She'd do the same things for any of them.
They are, after all, her family.
Seeing Eames slam up Arthur up against the wall of one of the instrument closets is something she doesn't expect, but she's OK with their relationship as long as their hickeys don't show when they're playing, and the swollen lips Arthur gives Eames doesn't effect his playing.
She can handle it when the instrument repair man Yusuf shows up to work slightly high, because he does a good job anyways, and had never screwed up anyone's instrument. Ever.
So no matter what, she'll always fight for them.
She'll always bail Eames out of jail when he and Arthur get into a fight and he does something stupid. She'll buy Mal the foods she craves when Cobb just needs a break. She'll go suit shopping with Arthur, make Robert feel at home. She'll even talk to Yusuf in fluent French, when he wants to.
Being with her symphony has made her privy to things she never once thought she'd she. Done things she never thought she'd do.
Like be Mal's maid of honor at her and Cobb's wedding, or be there when Phillipa was born. She marched with Eames and Arthur in a gay pride rally in a city four states away. She went to Tokyo with Saito, where she met some of the most amazing people ever. She went to a party fancier than she ever thought possible with Robert, all because he was too shy to ask out the girl of his dreams.
In the end, when Mal and Cobb are expecting another child (a boy this time), and Eames and Arthur finally get married, thanks to all their hard work and rallying, and Robert asks out the girl of his dreams (her name in Bethany, she is really quite lovely), she's fine.
She's fine, because in the end, she has her symphony, her musical rainbow; and the symphony is them.
FIN