What are three events Stephanie Crawford talked about in To Kill a Mockingbird?

Miss Stephanie Crawford is the town's resident busybody and gossip. She makes it her main business in life to know everyone else's. If there's something going on in town you can be sure that she'll gladly offer up her own unhelpful, ill-informed opinions on the matter. More than any one individual, she's responsible for creating the legend of Boo Radley. When Scout, Jem, and Dill break into the Radleys' yard to try and catch a glimpse of Boo, Nathan Radley, Boo's brother, comes out and fires a shot in the air. Miss Crawford is first on the scene and tells everyone what she claims Mr. Radley did:

Shot in the air. Scared him pale, though. Says if anybody sees a white n****r around, that’s the one. Says he’s got the other barrel waitin‘ for the next sound he hears in that patch, an’ next time he won’t aim high, be it dog, n****r, or—Jem Finch! (Chapter 6)

When Atticus shoots and kills Tim Johnson, the mad dog, most people in town are both impressed and relieved. But not Miss Stephanie. Maybe the poor dog wasn't really mad, after all:

Uh, uh, uh, who’da thought of a mad dog in February? Maybe he wadn’t mad, maybe he was just crazy. I’d hate to see Harry Johnson’s face when he gets in from the Mobile run and finds Atticus Finch’s shot his dog. Bet he was just full of fleas from somewhere—." (Chapter 10)

That's Miss Stephanie, alright. Always stirring the pot.
And finally, Miss Stephanie recounts, with a little too much enthusiasm, that the unpleasant business between Bob Ewell and Atticus must be mentioned, when Bob spat right in Atticus's face, called him all the names under the sun, and threatened to kill him. As we would expect, Atticus's reaction to this disgusting slight is stoical and restrained. He even earns a kind of grudging admiration from Miss Stephanie herself: "Miss Stephanie said you had to hand it to Atticus Finch, he could be right dry sometimes" (Chapter 22).