Given the lack of details and the other sketchiness in #4, I'm not at all confident that they were owed an apology, that the therapist acted wrongly, that an apology wouldn't be counter productive, or even that they didn't get one. It just has that crazy grudgy aroma that indicates a non-standard relationship with reality and events. The answer should have been No, you may absolutely not ask someone to apologize in light of their religious holidays. If the therapeutic relationship is over, then No, you may not ask them to apologize at all, unless you want to pay for an hour of their time in which to do so, but it seems like a futile gesture.

LW1 really needs a sanity check. People are afraid of dogs even when they are not aggressive. Dogs as a class are legitimately a danger, even though most dogs are not dangerous to most people. There is nothing unusual or rude about people reacting strongly to meeting a dog who is acting aggressively in public. If you're responsible and working on it, that's great. Other dogs owners aren't, and people can't safely assume that an aggressive dog is safe. They SHOULD speak to you! They are showing concern that is reasonable! You're in a public place meeting strangers with your dog who appears aggressive! You live in a society!