American Dragon FMG story

Greetings everyone,
I’m searching for a FMG story about some female characters from the Jake Long: American Dragon series. It was about a heroic female dragon(who is a teacher, I believe) confronting a villainous female dragon. They both use some mystical power-up to become stronger and more powerfull, growing bigger and bigger as they battle. They both start out in their human forms,grow bigger and more muscular and then transform into their dragon forms later in the story, growing bigger still. It ends with them becoming attracted to each other and becoming intimate with each other. I read it on DeviantArt, but I can’t find it anymore and I can’t remember the author’s name. Does anyone here know where to find it? Many thanks in advance.