(Daemon is 24 here, Aemma is still alive and Rhaenyra is still a child of eight. Inspired in the book.)
Daemon's marriage to Rhea Royce was a failure, and everyone knew it. It was a fine, rich match, but the prince quickly found the Vale of Arryn little to his liking. No love or affection was felt by him for her, and neither by her for him.
For him, no child could live in an place as hostile as the Vale, but in the first fortnight of their marriage, one had been conceived.
Daemon thought he would feel the same way about the child that he felt for his wife, contempt. But when he saw that little bundle identical to him, all he could feel was love.
It had been years since the child had been born and he had taken her to the capital to live with him - ignoring Rhea's pleas to leave the child with her.
The little girl was just like him, her daddy's pride, and that afternoon he had gone to her chambers to give her a gift.
He had ordered to be done a chainmail armor and a tiny dragon-shaped helmet made for her, as well as a tiny wooden sword. He was so excited that he didn't even ask her maids to dress her, but instead dressed her himself.
Seeing her dressed so adorably, he smiled at the sight, almost proudly.
"My little knight," he said, adjusting her helmet.