alpha princess who is the oldest child and is also told she'll...

she's instead married off to solidify a treaty.
Everyone assumes the queen is an alpha, too; so strong, so bloodthirsty, so large; the last of her kind.
The cruelty of this is twofold: marry the princess to another alpha and see what happens to the violence inside of her, and to end any hope of the queen
But their belief in cruelty is a reflection; the princess spends her years idle and sweet, growling only when threatened, or when someone tries to harm her siblings.
She can't help the strength, or the rough of her ruts, but she likes pretty things.
And the queen can't help the assumptions people make of her. That her brutality +
The princess realizes this as soon as she steps into the castle and smells the subtle sweetness of persimmon in her nose - distant, but there. Warm like dragon's breath.
It's a demand and a command, and the crooning in her chest turns to a roar of delight +