Since yesterday's successful query post seemed so helpful (I feel your pain, quiet contemporary writers!) I thought I'd post another. This was a previous manuscript that did not get me my agent - but it did get me 13 requests. So it did what a query is supposed to do - got the agents to read more.
It also shows you how I focused the query on one main character, though the manuscript is, in fact, dual POV. (That is made clear at the end of the query.) I had one version of the query that focused on both girls, and it also got requests, but ultimately I preferred this one. Let me know if you have questions!