This is a very exciting chapter and I can't wait to see what happens. It was very difficult to read through. There are lots of word substitutions and grammar/punctuation errors that make sentences hard to follow. The substitution of Barry for both Harry and Barty made things especially difficult during the Dept. of Mystries scenes. If you reupload the chapter after some editing and corrections I'd definitely read it again. I'd love to focus on the story rather than split my attention with decoding.
Poor Tracy.