Deleting shared audiobooks from family iwatches

Hello,

I removed some audiobooks from my iBooks library. Somehow the audiobooks were shared with my children’s iwatches. The audiobooks continue to be available on their iwatches, even though I deleted them from my library. The audiobooks do not show up in our shared family library either (as this is seems to be the typical fix for removing shared items). I cannot find where to remove the audiobooks from their watches, as I no longer own the audiobooks in my own library. Please help!