Adding to this older post - I still can't find anything on MSM but there are still sightings on SM and also a couple picture posts from 4/13/21 & 5/30/21 on the FB above now:
Kt LR
This case is confusing as it's unclear whether Katherine is actually missing.
It sounds like she is still officially classified as "missing" but there have been no updates to Katherine's case by MSM or LE in a very long time. From what I'm reading here there are recent reports of possible sightings and SM activity, but nothing confirmed by media or LE at this time.