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The Kesse's phone call to Mosaic and the dumping of JK's car 45 minutes later could simply be a "coincidence". Who knows? It really could have been tho. A freaky coincidence. He might have had the car elsewhere and not known anything about what was happening at Mosaic. Since there is only one gate...sounds plausible if no one saw Jenn's car leave after the phone call. The guard would have noticed.
As for the call from the Kesses. They asked manangement to see if JK's car was in her spot, and to go into the residence and see if she was okay, or if anything was amiss.
Considering Logan immediately got into his car and started driving to Orlando, my personal opinion is that it was much more serious than a "wellness" check. <<Yes, but not until they knew she wasn't in the apartment or around. Logan was with his parents before he left to drive to Orlando. He would have waited until they got word back. I meant the 'wellness' check wasn't that urgent for Mosaic...not the family. Not until they (security guard) couldn't find her, that is.
Would the security guard at the gate leave to go check on her? How many guards do they have?
As for the worker's. It's just a theory. But, if the worker had a company cellphone, walkie talkie, etc, it wouldn't be that unusual for a complex to alert employees on the grounds to look out for JK or her car. They wouldn't all be looking until the initial check was done and not found her at her apartment. This could have taken a little bit.
Heck, the Kesse's had fliers on every door by 5pm, so, they obviously wanted everyone in the complex to know Jk was missing. < They were fast! I applaud them!