Do you think my cat is mentally OK?

This is Cleo.

Do you think my cat is mentally OK?

We have another cat and dog who love each other, but Cleo keeps to herself. She sleeps like 99% of the time and almost never initiates contact or begs for attention. Still, she purrs and enjoys it whenever I pet her, pick her up, or otherwise give her attention.
Do you think it’s unusual that she never initiates contact or attention but likes it when she gets it? Do you think I should give her attention more often even though she intentionally goes to the quietest room to slumber the day away?

Do you think my cat is mentally OK?
Do you think my cat is mentally OK?
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