Woman of the woods, Johnna Holmgren of Fox Meets Bear, is busy. She has a cookbook, Tales from a Forager’s Kitchen, in the works, a third proverbial bun in the oven (with two little girls by her side), 100k+ Instagram followers clamoring for updates, her husband’s chalk business to assist and a straight-out-of-a-fairy-tale A-frame house in the woods of Minnesota to tend to...