My sister's boyfriend raped her while she was sleeping

My sister is 19 years old and her boyfriend is 24. Two days ago my parents sent me the message that they had to rush my sister to the hospital because she was vomiting blood. When I saw her, she was terrified. She didn't say anything. She refused to talk.<br><br>The next day she finally told us what happened. For the past 2 months, her boyfriend has been coming to our house. My parents are too trusting and always thought he was a good man. He slept over once or twice every week. My sister said that when she was sleeping, he would sometimes rape her in her sleep. He would have sex with her when she was in deep sleep and she didn't know anything about it. She was too afraid to tell us because she didn't want to disappoint my parents and also afraid of him. She said this happened more than 10 times.<br><br>When I heard this I was horrified. I was furious. I was so angry I could feel my blood boiling in my veins. I was ready to kill him. I went to his house with my dad. When we saw how calm he was, I could feel myself biting my fingers to prevent myself from killing him. He admitted everything.<br><br>I'm so conflicted. I'm conflicted because he admitted what he did but my sister didn't want to press any charges because she is afraid of him. She didn't want him to be arrested or go to prison but she just wants him to leave her life forever.<br><br>I'm just so heartbroken and angry right now. I'm so confused.