You're very welcome! It's quite horrid to wish for a book and not be able to find it -- like wanting a word that's on the tip of your tongue and eludes you. I hope you find what you're hunting. I have quite a collection now.
What reason have these people given you to question their motives? Desiring to teach, to help is something, and to go about doing it so openly indicates they aren't being furtive, secretive -- suspicious. I wouldn't call it optimism, precisely. More a desire to stay explicitly neutral until proved otherwise!
Most people do. The initials, I mean. They used to think I'd sell more books that way. I don't mind, exactly. It just means when getting to know people, they know more of me than I know of them. Cassidy -- it's a lovely name. Lovely to meet you, Cassidy.