That is so sad. Sending hugs your way. Keep the option open, I think. My mom has a Frenchie at home and we still take her with us when we go visit our grandma. She's so happy when she sees her!In tears I contacted the breeder this morning to say we won't be taking a puppy. I really had set my heart on one in particular but it wouldn't be fair on the puppy. It's traumatic enought to be leaving mum but to come into a volatile household would make that a whole lot worse. In my heart I know it's the right decision but it doesn't make it any easier. We've had dogs most of our life & the house doesn't seem like a home without one. Another thing sacrificed to dementia...... so sad.
I've found some articles online. Maybe they can help you.
https://www.brightfocus.org/alzheimers/article/alzheimers-disease-magic-pets
https://supercarers.com/blog/keep-your-pets-close-how-animals-help-dementia