Mara Wilson was a go-to child actress in the early ’90s, memorably starring in movies such as “Matilda” and “Mrs. Doubtfire” (“We’re his goddamn kids too.”). Today, she’s popping up all over the place – not in films, but at storytelling events around the city. She hosts her own this weekend in Brooklyn, with the title “What Are You Afraid Of?” I asked her a few questions about it for the Brooklyn Paper, including, of course, what she’s afraid of.