I just want to say something: I really, really hate it when people demand for a certain amount of reviews before writing the next chapter. In fact, it does the opposite, it makes me NOT want to review. It usually makes me press the back button and ignore the story. I'm just saying this because I think that this story has a lot of potential and could be great.
The fact is that fanfiction is like that. The ratio of alerts and favorites to reviews is not balanced. I have fics that have 15 favorites and NO reviews. It's like that sometimes, that's a big part of being a writer.