6 month old cat ate a piece of ribbon

Update- she just successfully passed the ribbon, about 24 hours from the time she ate it.

It was from a balloon weight- it was about 1-1.5 inches long and about 1/4 of an inch thick- like standard balloon ribbon. She ate it yesterday. She is eating and drinking and playing normally, but I didn’t see the ribbon in the litter box yet. Should I take her in or could she pass it?

Thanks!

ETA

-6 month female -domestic longhair -Spayed -6lbs -Up to date on vaccines -unremarkable medical history