Let's say you're a hobgoblin for 24 hours. What sort of havoc would you wreak? Or: If a baby of unknown origins suddenly fell into your care, would you keep it? What would you name it?
Um ... sounds like a given, to me: Call the authorities. It's gotta be somebody's baby!
However, I think I could remember how to change a diaper; and considering her origin, I'd name her either Faith or Hope. (don't know about boy names.)