Ok Please read because i am so confused! i talked 2 my parents and they dnt know what to do!!! please help!!!!

ok,backround information first. im 15 years old and i moved to africa when i was 13 with my parents. when i first came out here in rwanda there were no teens! at all, so know there are a lot of teens. but the first year,there was this family and this girl named sophia and she was 12. neways sophia and i started to become best friends and did everything together.so then i went back to the states for vacation and came back and there was this other family that had just moved out. and they had a 12 year old girl. so we all became good friends, but then kristin(the other 12 year old girl) and i became even better friends and started to talk bad about sophia. neways we all 3 talked about it and decided to work on our 'negatives'.so then we were all really good friends again. then sophia and i went back to the states,and buy this time i was 14-15,sophia was 13-14,and kristin was 12-13. so i came back before sophia and kristin and i were really good friends always hanging out and stuff. then