I’ve been taking my nine-year-old granddaughter Ava to the theatre since she was three, and on June 15 she accompanied me to the matinée performance of A Year with Frog & Toad, where we agreed that children’s shows don’t always have to be high-energy to be fun. This Circa '21 Dinner Playhouse production is a gentle story of friendship, and under the direction of Kim Kurtenbach it has a nicely old-fashioned vibe.