‘Mack and Rita’ director Katie Aselton lightens up (with the help of Diane Keaton)

The buoyant, body-swap-adjacent comedy Mack and Rita is Katie Aselton’s third time directing a feature-length film. And COVID precautions aside, it was a veritable romp in the park compared to her last outing, the rape-revenge thriller Black Rock, which premiered over 10 years ago at the Sundance Film Festival. That was her...