Twilight (novel series)
Renesmee grows more quickly and rapidly than human children. She was born only a few weeks after being conceived and continued to grow rapidly after being born. However, she will stop aging once she reaches full growth (the Cullen family discover this when they meet Nahuel, a half-human, half-vampire boy who is almost a century old). Renesmee has a special talent, like her parents; she has the ability to show her memories to whomever she touches. As an infant, she uses this ability to talk to people. She is very important to Bella and Edward as they do not know whether she will be able to live as a vampire or a human.