Shard of Thought uses Perception (it's a thing now. Go with it) to make Galavian Lash the wrong thing. She zooms toward Marsh, catching him in her arms and flying away from Galavian who is now plummeting toward the ground.
Shard of Thought dodges the projectiles, then tugs on Preservation's mind gently, suggesting that he Pull Marsh back down. Galavian does not realize that it's Preservation doing the Pulling.
Shard of Thought cries out, jumping up and kicking Galavian hard in the face before flying upward toward Marsh, willing herself to his location and holding him tight.
Shard of Thought isn't worried for Marsh because he's fullborn and can take a hit. Marsh gets up and slams Bean. Shard of Thought smiles smugly. Bean really Thought he could take Marsh down...
Whoops... fixed.
Meanwhile, Shard of Thought's servants attack the crowd letting Shard of Thought escape with Marsh to a Shardworld unknown to anyone in the cosmere. Thanks, Stick!
Shard of Thought mindlessly flicks the coins away, then begins to control Bean who takes up a piece of Ruin and become's Shard of Thought's puppet. He protects her while she goes up to Shallan and smacks her back to Roshar.