What if a Reformed Changeling betray Thorax Hive?
In this What if My Ponysona Circe is the one who Betray Thorax, She is still loyal to Chrysalis. And she immediatly hated the way how the changelings mimic Pony culture. She pretended to like of what the hive became.

The Changeling leaded The Changeling Ruler to a safe Place, All the hive were away patrolling and somes were around Equestria letting the "King" alone. Before he could even scream for help The changeling started to take his love.