My sister is an Asian High School freshman this year at a private Christian school. Throughout this whole year a white senior boy has been getting closer and closer to her despite her at first fending off his advances. Eventually she felt pressure and back in February he pushed himself to kiss her. I asked if this was at all consensual, but she refuses to say he forced himself on her. She just felt pressured is all. Her words.Around the end of March, our grandmother who we were close with passed away due to lung cancer, which took an emotional toll on both of us. We along with our family flew to Indonesia to bury her and give her a proper funeral, but because of this she had to pull out of school. It was during our trip she told me about the kiss and the way this guy has been on her, so I told her very clearly not to ever speak to this guy again if he's treating you this way and to let me and any adults know if he starts escalating it in anyway.Unfortunately, the guy didn't give up. A week or two after we get back from our trip, shes back in school but falling behind in her studies as she couldnt catch up. She decides to go out with her friends to a school function or something. Around 8PM, he meets up with her again and takes her back to his car. After a bit of talking, he starts driving out of the parking lot and asks her to give him a blowjob while he drives. When she refuses, he gets pissed saying that hes prepared for all this. He then asks her if shes willing to do it. My sister said she felt pressured at that moment, and eventually they parked somewhere and had sex. He apparently used a condom, but my sister is afraid it could have been broken. I asked her if she felt anything that wouldve indicated it broke, and she said she didnt that time.The day after, this motherfucker waits for my dad to leave the house and visits my sister again. She tells him he shouldnt be here. Eventually they have sex in her bedroom again anyways. This time, even though he again was wearing a condom, she felt something.Fast forward a month later to now, shes super afraid shes pregnant because shes been getting migraines and her lower back has been hurting, but shes not sure how much of this shes just imagining. My whole family, including her and I, are Christians. Im the most liberal out of all of them. An abortion would be out of the question, but shes afraid if word gets out about this (which it is starting too) the teachers could find out and possibly kick her out of the Christian school (which would be incredibly fucked up) and my conservative Asian Republican parents who are already stressed with selling their business, care home and moving me to Med School this fall would go absolutely ballistic.She took a pregnancy test yesterday and it was negative, but she wants to take another one this Thursday. The dude is graduating, but is going to a Community College near our house. I asked to talk to him but she wouldnt let me for now, at least not until Thursday. She doesnt want parents or police involved because she doesnt want him to get in trouble in case she is pregnant and has the baby, she wants the baby to have a father. Honestly, I want to punch out this asshole but I want to know before I do anything stupid what advice you may have? So far after talking with her, I just let her know that whatever happens Im here for her and will take care of her.TLDR; My freshman sister had sex with a senior boy twice, afraid shes pregnant, first pregnancy test negative and the second we will see this Thursday, our parents and rest of our extended family are highly religious conservative people, I want to know what I should do moving forward.5/29 Update 1: My plan. 6/1 Update 2: The pregnancy test. 6/3 Update 3: FAQ