With an Open Hand

This story has been kind of hinted at in discussions as 'klepto!Kara' and 'pen!fic'. It started with a ficlet response on Tumblr that is included here as the start of the story, in case you find the first couple of paragraphs familiar!

The premise: the blue-and-white blouse Kara wears in Bizarro looked more like something Cat would wear than Kara. We assume then, Kara spilled and then borrowed Cat's clothes without asking. Cat has a ... challenging reaction to that development. Kara, enticed, decides to start stealing certain things from Cat to grab her attention.

It, well, works.

She definitely gets Cat's undivided attention.