Unlike the rest of her vampire family, she is also able to sleep. However, as a half immortal, she will continue to grow until her full maturity at the age of about seven, at which point she will appear to be about seventeen (like her father
It is implied that Renesmee's growth will slow down until it ceases at the age of seven, by which she will have the appearance of a young woman. She may be able to live for centuries minimum, if not more.
Seeing as she's half vampire, one would think she would age much slower than humans, since vampires can't age at all. However, poor unloved Jacob shouldn't have to wait eighteen years for his happily ever after, so Renesmee grows abnormally fast, and will magically stop aging once she reaches sexual maturity.
Renesmee will eventually reach an age of maturity and stop growing, just like Nahuel, but she does have some time of growing left. Vampires are not used to growing, but Renesmee's aging process is much faster than a human's.
As a result, she not only gains immeasurable strength and good health, but her daughter, Renesmee, is born a vampire-human hybrid. Renesmee is special, because she is not an Immortal Child, or a child that was bitten by a vampire. Instead, Renesmee is born biologically.
Members of the Quileute wolf-pack do age if they do not phase for a long time; Jacob's body has physically grown to the equivalent of a 25-year-old in Breaking Dawn but stops aging after that.
Renesmee Cullen: a vampire hybrid. A human-vampire hybrid, also known as half-vampire, vampire hybrid, half-human and half-vampire, and half-immortal, is the offspring of a female human and a male vampire.
When they phase into a wolf for the first time, they stop aging. There are plenty-a-plot-holes here BUT if Jacob maintains a regularly scheduled shape shift, he can essentially stay young forever. This is a good thing because Renesmee will be Jacob's age physically in a mere few years.
Here's a little… memory… that I wish I could forget. What IS THAT?! Actress Mackenzie Foy takes on the role of a slightly older Renesmee Cullen, the child of Bella Swan and Edward Cullen .
Renesmee (pronounced Ruh-nez-may) Carlie Black (née Cullen) was born on September 11, 2006 to Bella Cullen (formally Bella Swan) and Edward Cullen. She is the resident vampire/human hybrid of the Olympic coven. She is the wife of Jacob Black who imprinted on her and the mother of Evan and Sarah Black.
At the end of the book Nahuel, the human-vampire hybrid the Cullens have just met, states that she will probably reach complete physical maturity around seven years after birth, physically appearing to be around sixteen or seventeen years old, at which point she will stop aging and live to an unknown extent.
At the end of Eclipse, she becomes engaged to Edward Cullen, and they marry in Breaking Dawn, one month prior to her 19th birthday. On their honeymoon, she becomes pregnant, and, due to the peculiar nature of her baby, Bella nearly dies giving birth to their daughter, Renesmee.
Renesmee is a vampire and human hybrid, known as a “dhampir”, and as such she shares traits from both: her heart pumps blood and her skin slightly glows in sunlight, and though her skin is warm and soft, it's as strong as a vampire's.
“Immortal Children” (a.k.a. Baby Vampires)
These are small children who have been turned into full vampires, meaning they will stay 5 years old (or 4 or 8, you pick) for the rest of their lives.
Their child would be 1/4 human, 1/4 vampire and 1/2 werewolf, which would make them a threat to the Volturi. Renesmee is fertile as she is 1/2 human. The only aspect of herself that is a vampire is that she'll never age after she matures and she drinks blood.
While some fans believe that Leah fell in love with or imprinted on Jacob during Breaking Dawn, Stephenie Meyer has stated this isn't true. This would simply have made their interactions too complicated, since she started out disliking Jacob, then they gain a "friendly" understanding.
Taha Aki, the first shape-shifter in the Quileute tribe.
The Romanian coven is one of the oldest vampire covens in existence. This coven is located somewhere in Romania, known as Dacia at the time of its founding. It was the original ruling coven before the Volturi overthrew them with their supernaturally talented guards, in a war between 400 and 500 AD.
Once a werewolf gives up phasing altogether, he slowly begins to age again until his aging reaches normal human speed." as long as you keep phasing you live FOREVER :o. They age at will basically.
In Jacob's case, he imprinted on Renesmee — who he affectionately dubbed Nessie — when she was a baby, so no, it doesn't mean he's in love with her. Jacob just has a strong bond to Renesmee and is more of a protector and as she gets older, will be a best friend, someone who's there for her when she needs it.
He would most probably die depending on how severe it was. Jacob said in Eclipse that if a vampire bit him, or one of the other shape-shifter, it wouldn't kill him, but if he already had a cut of something to that affect(combined with the venom) that could be fatal.
It's been a while since I read the book, but it was stated that while Reneesme will enjoy a much longer life thanks to her half-vampire genes, she will not live forever. It will be Jacob's aging process that will slow with hers since he “imprinted” on her.
In the world of Twilight, vampire women are unable to get pregnant because their body can not change to hold a fetus. But men are apparently able to get human women pregnant.
While she prefers human blood, like all vampires, Renesmee can subsist on a "vegetarian" diet.