Susan, I am so sorry I backed my Acura over your son’s toe yesterday. Especially since I did it on purpose. I know it’s not an excuse, but you have to understand that I am a writer. The first rule of my profession is “write what you know.” And right now I’m two thousand words into a short story about a gaggle of catty suburban moms who use their children as pawns. Crushing Aidan’s metatarsals was the only way I could tap into a deranged, stay-at-home mother’s psyche. It’s called process. Anyone who knows me will tell you that I…