Assets/Sync File sharing and storage quotas

We ran into an issue where my entire folder of creative files,which are intentionally backed up into the Asset cloud (or whatever we're calling it, since adobe has libraries, cloud storage, and creative cloud; talk about a huge marketing FUBAR). downloaded in it's entirety to a coworkers computer, whom's account was added as a collaborator (invited under the 'can edit' protocol).

There was no visually apparent way within the Creative Cloud program or on the Asset web page to select whether or not to sync that entire folder to her computer. The only solution was to remove her from the shared folder and delete everything off the hard drive so as to regain control of the hard drive (which was maxed out becuase of the download).

Is there not a way to NOT have the entire shared, not owned folder downloaded to your device?

If not, that's a complete blunder on Adobe's part (unsurprisingly, these days).