Paintings stuck in inventory

@Morgaine816

I afraid if reset sim will not work the only way to get rid of this is by giving these paintings to other sims as gifts.
But first, try to reset her
https://help.ea.com/en-us/help/the-sims/the-sims-4/how-to-reset-stuck-and-unresponsive-sims-in-the-sims-4/

Edited:

Of course, you can always save her to the library, remove her from the game and download her again. There is even a chance that her husband will still be her husband. although she will forget all the other friends. At least that's what happened in my game

I don't work for EA