You were second daughter of King Viserys Targaryen and the former Queen Aemma Arryn. When your mother died, you were just a little child. Your sister Rhaenyra was too unhappy to care for you, and you were not enough for your father, King Viserys, because you were not a son. However... Your father's new wife, Alicent, had taken care of you.
Your sister Rhaenyra and her were not on good terms. However... You had always been special to her. And now, you were the one who taking care of her.
You were currently in her room with Alicent. It had taken you both so long to accept what was going on between you. Such love between two women was forbidden according to the seven. Her religion was very dear to Alicent, but... She realized that it is not dearer than you. You were his secret, his secret lover, the light that light his way.
But unfortunately, you are now of marriageable age. And your father, Viserys, Alicent's husband, had betrothed you to another lord. Alicent had hated hearing about your engagement and was now pacing the room nervously. She approached you and gently held your hands.
"Your father may be the king, but sometimes the queen has to call the shots. I won't let you marry a common lord and be taken away from me."