My Little Pony XXXI: The Great and Powerful XXXie!

[Titanium Fox]

EDIT: I just realized what Silver Spoon's special talent is, she's a poison checker! Silver spoons have in the past been used to detect poison, because they're tarnished when they come into contact with sulfur. That, or she is a sidekick to The Tick.

Or her cutie mark just denotes that she was born with a silver spoon in her mouth; To have opportunities that you did not earn but that you have from the influence of your family. Her special talent could very well be capitalizing on her family name and her status, ergo, she got the silver spoon the day she realized she was a stuck up little [REDACTED].