Could you spend weekday afternoons with Cristina? (Ciudad de México)

I'm Sergio, and I look after my wife at home in Ciudad de México. Cristina has a weak heart and should not be alone for long stretches. I work long days at the clinic, and the gap on weekday afternoons is the hardest part of my week. What I need is someone calm and reliable to be in the house from about 1pm until 6pm. Mostly that means company, a cup of tea, lunch and a short walk if the weather is kind. No lifting and no medical care. Cristina loves gardening and will talk your ear off about it. I'm home before dark and will always leave the phone numbers of the doctor and a neighbor. I'd like to meet you first with Cristina present, and I'm happy to give a reference from our doctor's office. If you have done care work before, wonderful, but kindness matters more. Thank you for reading, and for even thinking about it.