Definitely a good and gripping story so far. 'Twill be interesting to see what evolves from this. I'll agree with Wonderbee31 that the participation of the Goblins in whatever is going on, things will get "interesting" for them, and I doubt that their "normal" protections will work against a very angry and determined Harry Potter, you don't do things like that to his friends.
Author's response
Thank you for taking the time to review my story. I'm glad you are enjoying it so far. The Goblins will be involved but don't forget that Lavender wasn't forced to work there by them but by society in general. So Harry is mad but well, you'll see. Lavender's story of how she ended up in the Creature Club is a big part of the rest of the story.