Do women over 78 get grumpy?

Get another TV, one for Grandma, all hers.

Older people can get grumpy. I think much of it is because they feel vulnerable, which is kind of scary. They also feel like no one listens to them or likes them much. This makes them grumpier, which makes no one listen to them or like them. Whatever you do, don't ask her why she is so grumpy. That will just make her mad. And a grumpy great-gran is a lot better than a mad one. :-D

Women of any age can get grumpy. (Men too.) I get grumpy sometimes. I'll bet you are grumpy sometimes.

Frequent grumpiness at irrational things could be a sign of health problems.