There is a movie genre I would call “the spouse gets alzheimers and dies.”  Or very close to it. My favorites:

Amour (2012)

Still Alice (2014)

Away from Her (2006)

Iris (2001)

Cherry Blossoms (2008)

They say that Hollywood is ageist and doesn’t think there is an audience for movies about older people.

(Pause for laughter and snide comments.)

Here are my current favorites for old farts and crones having a good and meaningful time. I don’t give you descriptions because you can find everything online, including movie trailers, if you google the title of the movie.
 
The Best Exotic Marigold Hotel (2011)

The Second Best Exotic Marigold Hotel (2015)

Ladies in Lavender (2004)

Land Ho! (2014)

Frankie and Grace (2015, Amazon Prime)

Elsa and Fred (2015)

I’ll See You In My Dreams (2015)

Whales of August (1987)

The Bucket List (2007)
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Quartet (2012)