The Spoon
Victoria had believed their house was haunted, until they moved and the weird stuff in the kitchen didn't stop. Maybe it was her mom who was haunted.
When the so-called experts, most of whom were crackpots, realized there was a real phenomenon, most ran out faster than Victoria's father had.
In the end, it was her mother's new boyfriend who made the connection. David was an oceanographer, and he recognized the sounds coming from the spoon as whale song.
Victoria wanted to keep the spoon, but her mother sold it. After that, Victoria went to go live with her father.