Loli-chan wasn't on /b/ except at the beginning: she set up her own board on chanchan after she was b& from /b/. Most of the regulars there were not your typical /b/tard sort, and the admins were pretty protective of her, anyhow (in fact, she even asked them to loosen up on more than one occasion). Besides that, far from not knowing what she'd gotten into, Loli-chan was more aware than most everyone else was: she could troll with the best of them and was impossible to intimidate, that's why /b/ took such a liking to her.
The community that developed on her chanchan board was pretty benign. To be sure there were a few creeps about, but she could take care of herself. The person that outed her, far from being a hero concerned for her welfare, was a jealous girl who wanted attention and got it by causing trouble for Loli-chan. That's IF the story about being outed is true: there have always been persistent rumors that it was all a ruse concocted by Loli-chan herself as an excuse to quit camwhoring.
For my part, I don't believe that, because I think that if Loli-chan had wanted to quit, she would have just announced she was quitting and have done with it: that was more her style. Like I said, she there was no intimating Loli-chan (that's why we never got nudes from her, unlike any other camwhore I can think of, underage or not, who was nearly as prolific as her).