Yes, I'd give her access to grit. I would just monitor her closely for a few more days, make sure that no mass forms in the crop again, make sure that she continues to pass droppings normally. Did you , or are you, doing the worming 5 days in a row?
If she clears up and is fine after that then I'd suspect she may have had a worm load. Sometimes you will see dead or dying worms in droppings, but many times they are just digested and you won't see anything.
If she continues to have issues then there is likely something else going on. But I would give her a week following worming to return to normal. Sometimes they perk up a lot in a couple of days, sometimes it takes longer.