When your sweet, innocent, lovely, baby cousin seems to become bangin' hot over night and you have to worry about her doing the secks?

YOU GUISE. I practically raised her growing up because of our crappy adult people and now I have to watch her flirt with yucky little boys on Facebook. She recently came to me telling me she wanted to start doing stuffs so since her mom died last year I arranged for her to get a BC implant like the one I have. She got it last month and I know she wants to use her brand new, safe vagina and I'm devastated! :(

Have you dealt with this before? WILL I BE OKAY? What do I do about the yucky boys? I want to continue being supportive, because I always want her to be comfortable coming to me with things. It's just so sad, she is my baby gurl.