Post-op Recovery Help/companionship For A Very Kind 80-year Old Retired Engineer In Sammamish

We are looking for someone who is compassionate and social to help with my Dad who is 80 and recovering from open heart surgery. My mom is in her mid 70s and struggling to take care of all his needs. We're hoping to find someone who may be able to walk with him, encourage him to do his PT exercises, and keep him company when my mom is out running errands. They live on the Sammamish plateau and we're hoping to find someone who can work with him at least 2-3 days per week, maybe more depending on how his needs evolve. Hours and days are flexible. Appreciate your response!