Tania's story is, unfortunately, not unusual. In fact, Tania got out of her troubles relatively easily. If your situation is like Tania's—alone, out on the street, with nowhere to go and afraid to go home, there is help for you. Real help; not elves, not magic, and you don't even need a quarter to get it.
Call 1-800-999-9999 for the Runaway Hotline. There are people on the other end of that phone that will help you: they'll find you a safe place to stay, they'll help you with any other problems you might have, from drugs to getting away from a pimp, and they'll get you back with your parents if that's the right thing for you.
You can call an 800 number from most payphones for free. Check the instructions on the front of the phone; you shouldn't even need a quarter to use it. Just wait for the tone, and dial the number. You won't be sorry.
Make your own luck—and your own magic. And then go and build yourself a good life.