A person whose face was a mass of writhing tentacles. "Help, help" they were saying. "I drank a bad vial. I need help from the unicorn lady."
Rose came to the door. "Oh, you poor thing. Come on in."
Darius had seen stranger things in her journeys with Sally to alternate universes, but she was still amazed at Rose's calmness in bringing this monstrous-looking person into the same space as her baby.
"Now just sit here." The monster, whose entire body was covered with tentacles, sat down obediently. "Now this might hurt a little, but its for your good." She bent over and touched the area where the monster's forehead would have been with her horn. The monster fell into a deep sleep. Rose continued probing with her horn while Darius looked on agape. The process took about twenty minutes, after which the tentacles were visibly drying up and becoming brittle.
"We still don't know where the vials come from, you know" said Rose, conversationally to Darius. "The last batch had some bad ones. Mislabeled. Turning people into grotesque monsters rather than doing what they say it does on the label. A unicorn horn is one of the few things that helps."