Develop, Sync to cloud and Map will stop working. She'll still be able to access her photos and export them. As per this link: https://helpx.adobe.com/manage-account/using/cancel-subscription.html
You can continue to access all your photos on your local hard drive through Lightroom for the desktop. You can continue to import and organize photos and output your edited photos through Export, Publish, Print, Web, or Slideshow. Access to the Develop & Map modules and Lightroom for mobile is not available after your membership ends.
The photos synced to the cloud are on the drive still. They're not stored in the cloud, they're just smart preview versions online.
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