I'm a 30 year old guy, and I'm single, never had a real girlfriend to speak of. My sister's first born is in some trouble and she has decided that her daughter cannot live with her anymore (there's been some lying, stealing, running away from home, and, well, sexual activity). So it's either she lives with me (I'm not exactly a short drive away) or she gets sent to a foster home, or basically a prison for teenage girls.
I'm willing to do whatever it takes to keep that girl safe, as my family is very important to me and I especially adore her. I took her in as a visitor for the past month or so, and things have been fine so far, we get along great and I haven't had any problems.
As it turns out, her mom has basically told her nothing of the seriousness of the situation, that she is kicking her out. It's apparently up to me to tell her, or have her mother tell her, and I'm not sure what's the best (least bad?) way. I kind of get the feeling that they're not communicating very well, and that they tend to fight a lot, so I'm not sure if her mom should be the one to break this news, or if I should be the one. I'm sort of an easy going guy that tends not to get too worked up, I don't judge, it's all cool by me, I usually just coast through life in chill mode (even though it sometimes bites me in the ass when I get kinda lost).
In this case, I'm definitely kinda lost. I've never had a kid. I don't know how to raise one (I don't know if I can ever "know", is that something you pretty much just have to wing it?). I don't know how badly this is going to mess her up, if it will cause her to misbehave with me the way that she seems to with her mom. I guess there are so many questions that I ultimately have, but it starts with the big one first
How do I talk to a 14 year old girl about something important like that? How do I say "your mom is kicking you out, you can either live with me or she's going to ship you off to some boarding school type deal"?