Apple Warranty for Second Fix

I recently bought my Apple Watch 3 in December of 2018. Since then I have sent my watch back to Apple because the screen shattered. Now the Screen is cracked again (although I am not sure how it got cracked.) I was not charged the first time the watch got sent back because it was covered under the 1-year limited warranty. I wanted to know if it would still be covered under the same warranty for the second fix, or I would be charged this time for the repairs.