I get that you'd want to have a word with her - after all she caught you by suprise and you almost tripped when she called out to you so loudly - so please don't get me wrong in what I say next:
Her loud comment to you was not especially preachy or exposing; she never called you "Sister", nor did she mention anything directly JW-ish that non-JWs would have noticed. She simply held up some book and asked you whether you'd had your breakfast. You recognized the book, everyone else wouldn't have known the significance of the book
Your reaction suggests that maybe you hadn't had your breakfast and hence were feeling hungry,irritable and possibly a little oversensitive.