With titles like “Overgrown” and “What Girls Are Made Of,” Cousins’ series poke fun at gender tropes, replacing passivity and “sugar and spice and everything nice” with slugs, oozing flowers, split-open fruits, and body hair. Close-up, raw, and filled with glee, her empowering portraits and still-lifes relish in the unashamed mess and glory of self-possessed feminine sensuality.