Well, that's good for Hary. He doesn't have to go back to that terrible place. Was it ever home for him? I'm surprised that they waited four days though, to get Harry. Couldn't the Death Eaters have figured out where he lived and got him in that time?
I love your Snaoe and Harry in this, and your Dumbledore. They are all wonderfully in character. Of course Snape would be angry having to go get Harry, and also angry that Harry went with him. Harry really can't win. At least Remus was there when Harry arrived at Headquarters. Hopefully the adults will help Harry with his grief and pain in some way.
I'm very interested in this story and I really loved this chapter. I can't believe that Snape actually Petrificus Totalused the Dursleys! Ha! Harry is super lucky that he didn't get another underage magic warning again.