It should be noted that just because a retail store closes to the public, does not mean that ALL the employees grab their things and run out the door at that time. MANY stores, especially on Sunday night have employees that stay to do "recovery" which involves restocking, straightening, folding, hanging, replacing items moved to wrong areas, designing new displays etc.
Yes, that's possible. My post would have been twice as long if I listed everything that was possible. I'm presenting one possible scenario - that someone besides JC could have reported KM missing.
It's also possible that the manager could have been reached after hours by a cop, who was alerted by JC's call and nothing else. However, in that case the manager would have had to contact an employee(s) soon after the cop's call. Because it appears that employees and even ex-employees (like the woman on FB) knew about it within a few hours. So either they were called by the cop while they were all still at the shop, or, the manager got the call and then told them.
All of this is of course speculation......as is believing as fact an unknown FB poster's comments as truth.
I don't "believe it as fact." I present it as information. That's all we can do here - think about the information we have, and think again if the information changes.
I think it's potentially helpful to examine possible scenarios, because it might help us see what things make sense and fit together and what things don't. For example, thinking more about David's Bridal and the timing of the 911 call clarified for me that regardless of the time of JC's call, he never called David's Bridal.
Anyway, just FYI, the other David's Bridal employees seem to acknowledge the "unknown" woman on FB as someone they know, unless they're ALL pretending to be current and past DB employees. It would be pretty strange for a person to masquerade as a recent DB employee, claim to know KM worked Saturday but didn't show on Sunday, and that the cops called Sunday (all of that time-stamped the same Sunday night) because you'd think that another employee would pipe up if any of that were wrong.
ETA: Another DB employee (currently employed there) on FB also said Katelyn worked that Saturday, which backs up the statement of the woman I wrote about originally.