I'm new at this myself so I'm just thinking out loud. Presumably with the time lapse you've resolved this?(if so, how?)
This is just an off the cuff idea without really knowing anything about your system or business practices.
The only thing I could think of is possibly creating another copy of the database, and restoring the last backup from when you think the deletion occured. Maybe there's a way to then export the missing data to the production system?