I am close to a woman who left an abusive marriage after her husband pointed a weapon at her and her child and threatened to kill both of them. Two days after she and her child moved out of their residence, I attempted to check in with her by phone. When there was no answer after 2 tries, I immediately called several numbers belonging to the owners of the home where they were staying. When nobody answered any of those calls, I became extremely concerned and left a message saying that if I did not hear from someone in 10 minutes, I would have no choice but to call 911 and ask that police go to the house (I was too far away to go myself in that moment). Under the terrifying circumstances (past DV, a restraining order, etc.), I was totally frantic at the thought that the husband could have gone there to harm his wife, the child, or the people who were sheltering them. Thankfully I did receive a call back before I had to do that--but I can certainly understand why the staff at the dental office called police so quickly and what they might have been thinking when they requested that welfare check. I think it's very plausible that one or more coworkers had at least some awareness of a potentially dangerous situation involving members of this family and felt just as frantic and fearful as I did when I couldn't make contact with my loved ones. This is my perspective only, of course!