She might like some Torey Hayden.
Hayden is a teacher who worked with special ed kids no one else could handle, in many cases, making classes out of kids that didn't fit elsewhere. Her specialty is elective mutism, but she's worked with many issues.
Her books range from her experiences with one class to one kid. There are kids in her books who suffered from abuse, who are autistic, have other organic disaibilities, etc.
Here's a bunch of her books. One Child is her first and most famous. There's also a sequel, published years later, when the girl in it contacts her as a teenager.
It was published a bit ago but it doesn't matter, there's no real way to tell, in the book, when it is or anything - I mean it could easily be today, it's a classroom with kids in the modern era.
Also, since she's interested in religions and lifestyles she might like some of these.
This book was written by a guy a little older than your daughter who was an atheist who decided to spend a year at Liberty University, an evangelical Christian school. It's a really interesting look inside Liberty, as someone who didn't grow up in that religion and how he got along with people and learned about it and etc.
There are also books by A.J. Jacobs she might like, including
this one in which he spends a year trying to follow every biblical precept literally to see if he can, and
this one in which he tries a bunch of different experiments, like to tell nothing but the truth for a month, to pose as a celebrity for a month and see if he can get into parties, etc.
Also
Nickel and Dimed, in which a journalist goes out to attempt to make her way on minimum wage jobs to see what happens. It's very engaging and interesting and an easy, fascinating read.
There are lots in that kind of genre, the experiment deal, that she might like, but those are some very well received ones.