This is good news, as these are the things I would expect in a situation like this where there is an abduction/kidnapping.
The thing that bothers me is that it wasn't done sooner typically these things should be done within the first 24-72 hrs as the first 48hrs are most critical for a positive outcome.
- Elimination Samples: Persons with legitimate access to the home—such as housekeepers or gardeners—are prioritized for "elimination samples" to quickly filter out their DNA from evidence found at the scene, usually in the early stages of the investigation.
- Legal Process: While often voluntary initially, if a staff member is considered a suspect, DNA can be collected upon arrest, a process that in some jurisdictions is now expedited by Rapid DNA technology (providing profiles in ~90 minutes