My grandmother is over 90 years old, and lives in a retirement home. She can't do anything alone anymore, almost not even move, and basically she is in bed all day, almost only sleeping.
There are days where she can answer yes/no question with her head, but some days she doesn't do even that. My strategy so far has been greeting her, asking her if she is well (in part to test if she answers or not), asking her if she knows who I am, and telling her I am her granddaughter.
When my mother is with me we talk to each other, or on some days I just explain some stuff to my grandmother. But today I didn't know what to say, or if it was ok I caress her on her head. I want to be good company for her, but I just feel lost without any feedback.
What are good strategies to be with her? If I don't have words, does it bring something if I just stay silently with her? Is there something else I can do to be good company to my grandmother?
EDIT to update: End of last year my grandmother passed away. Your advice helped me to talk to her and be as a good company as possible while she still lived. For this I am really grateful to your kind words and advice, so thank you for helping me helping her.