Yes give the medicine a try, see if that helps. See that she is eating and drinking enough. If she needs separated for peace and to get food/water, a large wire dog crate works well if you can get one. That way she can still be in site of the flock.Ok I’ll use the tylosin, she doesn’t have bubbly or foamy eyes, and she’s doesn’t have an enlarged under belly, I’ve been checking her daily because I’ve had a hen with water belly. I can’t currently fully seperate her and don’t see how much it could do after almost a week of symptoms but I can’t set up a temporary pen in my coop where she can’t get controlled food and medication and peace from the others