Then you should talk to someone, because that doesn't sound healthy. There are no externalities that should be triggering depression.

My father just died, my mother is depressed. That's a natural, normal, healthy reaction to a traumatic externality.

Being depressed as a result of meeting people that you don't want to meet seems perfectly normal to me. Talking to someone when you don't want to talk to them seems like it would only get you more depressed.

IMO, bad advice, please rethink.

Your mother isn't depressed because your father died. You should not be feeling depressed because you meet some people you'd rather not. It seems like there are some unhealthy internalizations going on that can be identified by talking to someone (for a start). I hope for the best.

His mother emotional state should be unaffected by husbands death?