@Yautja If you read the manga you'll see that Tatiana has transformed partially before, when she attacked Akira Garcia Fujisaki in the later chapters when Min Mei was hunted by Ryuu, Lee's right hand man.
@Kahlan The normal life expectancy of a werewolf is 250 years (info from the Novellas), unless they receive The Rose Kiss from a Vampire Queen like Mina's mother. The werewolf elders like Lord Scott (Angies grandfather), Lord Ernest, Edward and Connery were all 500+ years old before they died...