Hello,
Good work in spotting the signs. It is a shame these things can be missed. It took the doctors ages to diagnose me with Type 1, even though I had many dr appointments. That was 15 years ago, so I thought maybe things would have improved being that diabetes is all over the news these days. I recently heard of a man that was very unwell with what the drs thought was a sick bug but turned out to be a very bad case of DKA, the advice to drink some form of sugary drink like orange juice did not do a great deal to his blood sugar level either!
I suppose the best thing we can all do is keep an eye out for friends and family members and do what we can to raise the profile of the symptoms of diabetes. As it can be fatal left untreated! Your neighbour is lucky to have you on the look out.