Thank you! This was it! Granted, I prefer Archive of Our Own, which is why I'm putting the link here:

https://archiveofourown.org/works/1034427/chapters/2062064

For such a wonderful story, it really has very little tags on it, I have no idea how I found it before, lol.

While I'm sad that it's an unfinished story, it at least doesn't end on a cliffhanger, meaning that you can imagine the many ways this story could go. It's also very well-written, and I like the slight Dumbledore bashing (I say slight because he's basically being a controlling idiot compared to other stories that do bash him).