A New Exorcist?

(this is my first fanfic so any criticism is appreciated! I also have my first OC written into this so let me know what you think of them too.) While on their way back from a mission, Allen and Lavi stop to rest for the night at a small town and end up meeting another exorcist from the order! The exorcists end up finding a supposedly haunted mansion, which they think has an akuma hidden within it. Will the exorcists be able to solve the mystery behind the mansion and defeat the akuma? Read to find out! (DISCLAIMER: i do not own any characters originally from D. Gray-man, all characters from D. Gray man are owned by Katsura Hoshino so please give her the credit she deserves.)