As long as her crop's full at night, empty in the morning, and she doesn't have a pasty butt, she should be all good.
I'm always astonished by a chicken's ability to eat something non-digestible that they shouldn't, but I suppose they would have to in order to process grit.
I'm assuming you'll be discontinuing the puppy pads now? Mine always tried to get after the little foam beanbag pellets in the back yard which came with the house. I swear this place was used as a tip before we moved in. After 3 years here, I think trash has finally stopped rising to the surface.