I've read The Truth About Forever, Just Listen, and Lock & Key
I usually don't like the types of books she writes either but i really liked The Truth About Forever
The other two i didn't really like, i prob won't read them again and i've read a lot of books really similar to them so wasn't that impressed
I would def recommend The Truth About Forever though, the topic was okay but the characters were developed really awesomely and it came to a very nice end
Try it out, you might be surprised!