DD turned 4 in Jan. Overnight she has gone from shy, cling to Mom to running off without a care in the world, talking to strangers. Strangers like the waiter at a restaurant or people at a park. Always with me there. But I'm worried she will talk to someone without me or fooled by someone bad. I haven't said much to her about strangers since she was shy but now I need too. Any good books to read to her or things to say? I don't want to scare her but I want her to know what to do. And I plan to cover the private parts discussion too. Thanks!