Is this (details inside) something I need to worry about?

When I first met my wife, she used to read Romance novels.
After we married she was partial to Fantasy/SciFi.
We had kids; she started reading Short Stories.
As they got older she read Suspense books.
Then came graduations/marriages/menopause/etc and her book of choice was Historical Fiction.
Lately she has swiched to the Murder/Mystery genre.

Is this something I need to be concerned about?