Have you picked her up to see how much weight she has lost? If you can tell she has lost a lot of weight, you will need to realize she may not have much time left for you to treat her. Actually, your whole flock Neds to be wormed as soon as possible.
She hasn't lost weight surprisingly, she's actually been growing! She used to be the smallest. I'm having my husband pick up safeguard now to treat everyone. Because if she does have worms it's only a matter of time before everyone else gets it! Can't decide to get safeguard for goats or horses haha