She is a wolf who lives in woods. Even know she's a white wolf, she only shows herself at night because she cannot stand in the sun. 

He is a fierce and a violent wolf who lives in a deep dark forest near a small village. He is a brown wolf and will attack his enemies anywhere and anytime. 

But then, he saw a white wolf roaming alone around in the woods, so he decided to attack her.

But when his eyes meet hers, his movements from attacking her suddenly stopped. 

He didn't attack her, unless, she attacks him violently. 

He tried to control himself from attacking her back but he failed. While she was attacking him, he started to attack her back violently.