The Red Queen by Philippa Gregory

★★★★

" 'Yes, Your Grace,' I correct her.  'I am My Lady, the King's Mother, now, and you shall curtsey to me, as low as to a queen of royal blood.  This was my destiny: to put my son on the throne of England, and those who laughed at my visions and doubted my vocation will call me My Lady, the King's Mother, and I shall sign myself Margaret Regina: Margaret R."

Cousins' War #1 - The Lady of the Rivers
Cousins' War #2 - The White Queen