I was living in Northern California at the time, when something like this happened in our congregation.
In our situation it was a Sunday meeting and the public talk was going on. An older sister went into the rest room and as she was in there, she colasped. Another woman came out and got an elder and he called 911, and a man who was a EMT in the congregation went in to help. We all saw something happening in the back, but the elder giving the talk did not skip a beat and went right on. The EMTs arrived and carried her out, she died on the way to the hospital and they announced her death at the end of the Watchtower study. Like your situation, the talk went on and the meeting went on. Heartless to the end. I wonder, how she felt when she went into spirit form and saw just how uncaring these people were. As her daughter left the religion only a year later, perhaps it was her mothers last mission in life to avenge the heartlessness of her death in open her daughters eyes.
The worst part about it, the man who was given the public talk was held up as some kind of amazing professional speaker. As he was able to ignore the events he could see so well from his position and keep doing his talk.