This is no joke but my sim thinks it is

I had problems with my Sims 4 game, one sim got stuck in CAS and i had to keep shutting the game down and starting again, i couldnt save because of error 0 on my main save game but could save on a new save game. I tried repairing but that didnt work so i uninstalled and reinstalled. I still cant save, the sim still gets stuck in CAS and now my main sim that i play keeps telling her husband jokes, one after the other. If i X the joke, another one is there, and the same if i X it again. I think she is trying to kill her husband personally, he has already died of hysteria once and i made her give a death flower to Grim. She does occasionally flirt with her husband, does answer him with the regular answers but her part of any conversation is a joke. She doesnt do this with any other sims, she speaks to them normally and throws the odd joke in here and there as per normal.

Has anyone else had this happen please or does anyone have any idea how to stop this?

Thank you.

Jeanne