What do you think about me telling my 92 year old grandma her life investment is essentially worthless?
I can't believe you would say that to your grandmother. Why would you want to make her sad?
Cuz I'm a bit of an asshole and she's an asshole too.
I understand that you think her life investment is worthless, but you shouldn't disappoint her like that. Be kind to your grandma and enjoy her while she's around.
She's too old to live.
Intentionally saying something to hurt your grandmother is wrong. It would be best if you did not bring up her invest at all.