As far as I know (any biology nuts can correct me if you want) The body is essentially growing and constantly renewing itself until it reaches it's sexual peek (In female's cases about 29). It then basically starts the dieing process naturally. However, if this trigger is never activated in this girl, then yes, she could live a very long time.
Genetic scientists have theorized for years that if the process could be stopped, a person could live for one or two thousand years until averages dictate that either something will activally kill you, or degradation of non-renewable body-parts kills you. They just can't find a way to stop it, and the ethics involved tend to stop most serious research into it cold in it's tracks.
Genetic scientists have theorized for years that if the process could be stopped, a person could live for one or two thousand years until averages dictate that either something will activally kill you, or degradation of non-renewable body-parts kills you. They just can't find a way to stop it, and the ethics involved tend to stop most serious research into it cold in it's tracks.