Healed hen rentry to coop

[Cathyhancock]

My hen was in the house for 3 weeks recovering from a head injury with a dog encounter
We put her back in the coop but she wont go inside to sleep, I have to take her off the roost and put her inside. Any suggestions

 

[Perris]

she fears attack by the other flock members; you will need to integrate her gradually. They have short memories and have forgotten her over those 3 weeks, so will treat her as an outsider, and she likewise will feel a stranger. Look up some articles and threads on integration; there are a lot of good ones.
And hello @Cathyhancock - welcome to BYC