After Maria changed Jasper, she went on to create an army of newborns. One of those newborns was Charlotte. Jasper and Peter were set to destroy her, along with the other newborns who were outgrowing their strength, but when her turn came, Peter "yelled for [Charlotte] to run, and he bolted after her (Eclipse, pg. 299). She returned with Peter sometime later and Jasper travelled with them for several years.
In Breaking Dawn, Charlotte and Peter witness in defense of Renesmee when the Volturi arrive.
Too late to regret not packing the Victoria's Secret silk pajamas my mother go me two birthdays ago, which still have the tags on them in a drawer somewhere back home.' - Twilight, Page 298
