You may have to catch her and move her away from the others when giving medication.
I have a table I stand mine on, this way I'm not struggling to hold them under one arm and balance them. They can stand, then I pull them to my body capturing, much easier for me, so something you might try (easier on the back too!)
Here's a good way to get medication into them if you have a difficult "patient".
https://www.backyardchickens.com/ar...er-construction-check-back-for-updates.73335/
It's good that she laid a whole egg. Hopefully things will start to become regulated. Going to the roost, she may still be unsure about using the nesting boxes. It can take time for newbies to become comfortable with their new home.
I have a table I stand mine on, this way I'm not struggling to hold them under one arm and balance them. They can stand, then I pull them to my body capturing, much easier for me, so something you might try (easier on the back too!)
Here's a good way to get medication into them if you have a difficult "patient".
https://www.backyardchickens.com/ar...er-construction-check-back-for-updates.73335/
It's good that she laid a whole egg. Hopefully things will start to become regulated. Going to the roost, she may still be unsure about using the nesting boxes. It can take time for newbies to become comfortable with their new home.