LIFE SUCKS

I was raped on June 12, 2008.... they guy who raped me keeps coming around, everytime he comes around me he's always doing the same things to me over and over and over again, he tries to get down my pants but, thank GOD someone always comes around or yells for me.... I want to go through the legal system so bad BUT (here's why im stuck in a rock and a hard place) He is dating my adopted sister, he is the father of my niece and nephew, if i was to report it i'd lose my sister and my niece and nephew, but if i don't he's going to keep it up... but im also scared to report him because of what he told me when he raped me last year... He told me that if i ever told anyone that he did this to me and he found out i would regret telling them, he said that he would make sure that i can't tell anyone else ever again, and said that hewould flee the country and make it so that nobody could ever find him, im scared for my life, if i do go through the legal system he'll know that i told, and keep his word, if it's not him i know exactly who he'll have do it, i'll refuse any type of shelter because of the fact that he knows where all my family lives and i don't want anything happening to them, i would rather something happen to me before them.... someone please help me, i really honestly do NOT know what to do..... He told me that if i said anything to anyone and he found out, i would regret it, he would make sure that i can't tell anyone else about it, and he would flee the country so that nobody can find him, i want to report him but im scared of him, i don't know what he's capable of doing... My Counselor told me to do a pro/con list of pressing charges on him, well i did and i have a page and a half of cons and not even a full page of pros..... I don't know what to do.....