Ditto Dat!I personally don't believe in treating something that's not there. Better to know for sure that you need it (and more importantly, what specific worms you're dealing with, which is something else a fecal float can tell you) and then treat accordingly.
How long did you restrict her ranging?even tried restricting her free range but still nothing.
There's usually a 'reason'... but it's often just that they are not stellar layers.Has any one else had a Hen that just stopped for no reason?
Marans can be that way.
If she's otherwise healthy....eating/drinking/pooping/moving around OK..I'd not worry about it.