If you can get some Lurlene McDaniel books, your daughter might enjoy those. She typically writes about teens who face tough situations or illness, so that would give the Sister's Keeper kind of vibe without any possible language. (I've read one Jodi Picoult and I'd say she's definitely for adults.) And Lurlene packs the emotion into her books, like Karen Kingsbury, but she does aim for the younger audience.
I now run away from books and authors that tend toward tearjerker plots, though my mum still raves about Nicholas Sparks every time she reads one of his. I'm just too hormonal to deal with all that! LOL Not quite realistic, but I like happy endings. ;)