Twilight (novel series)
In New Moon, Bella becomes friends with Jacob after Edward leaves her. Their friendship becomes troubled when Jacob turns into a werewolf. He is told not to see Bella, because if he loses his temper, he will transform into a wolf and could end up hurting her if she is too close by. However, when Bella tells him that there is a vampire hunting her, he realizes that leaving her alone would be more dangerous than staying away from her. Bella visits Jacobs house and his father says he is not in. Bella refuses and bursts in and sees him sleeping. Bella then peers out the window and can see Jacobs ' Tribe Mates'. Troubled by what they had done, she storms outside yelling, "Sam". One of the pack gets ratty and Bella loses it, giving him a hard slap round the face. One of the other pack members told her to run. The werewolf Bella slaps gets so angry he turns into a werewolf. Jacob wakes up just in time.