I am newer to chickens and no expert but I can tell you what has worked for my kiddos that have been either pasty butt, lethargic, sleeping, dehydration…and I did some of this when I treated them with corid and de wormer when they were really sick. And I lost a silkie so I tried all the things!
Nutridrench, Save a chick and powder probiotics with their food and mine turned around 12-48 hours. All of those are good to replenish their systems from the medication.
I would stick with her chick feed over scratch just for nutritional reasons while she is healing.
I will add nutridrench to either their mush or in their water. I offer it this way to guarantee they are getting all the things bs throwing it all over the floor or not drinking enough. I just alternate daily and offer them one of the following. I premix save a chick to soak and make their mush.
-crumbles mixed with a tad bit of coconut oil, and yogurt.
-Crumbles mixed with scrambled egg cooked with coconut oil.
-crumbles and save a chick.
Hope that helps! Good luck!