For the love of pete don't fix it!
I played through Episode 3 twice out of my three saves. And bloody mary is pretty scary. She's got silver bullets, Woodsman's Axe, Inhuman strength, and oh yeah THE ABILITY TO TELEPORT THROUGH ANY REFLECTIVE SURFACE! If you read her little bio in the unlockables section it reveals this skill of hers. Now does the Business office have any reflective services in it? Like oh say... a Mirror? Can you imagine what would happen if they fixed it. At any moment she could step through and kill everyone. And that would just be on a whim because she's psychotic. Right now it seems the only thing keeping her on her leash is The Crooked Man {who is almost definitely either Bluebeard or Orange Haired Guy} But if he let his grip on her go for a moment she'd probably kill Bigby, Snow, and half of fabletown for a laugh. Also remember if you asked T.J. about if he heard anything he says he heard someone say "stop laughing at me" but didn't hear any laughing. Could Mary have been laughing at whoever was disposing of Lily's Body?