Trouble re introducing my hen to her old flock

[BlueEggsAndHens]

Hi everyone, So after one of my hens was attacked by my rooster I took her out for 2-3 months for her to recover over her injuries while recovering she has been with the flock through a fence. I have recently been letting them spend time together in the same area. I have tried to get my hen to sleep in the coop but two of my hens are being very aggressive once she's in the coop but During the day they are civil with little to no pecking. Now my hen has gained a wound on her crown im confused why they are only attacking her once she's in the coop. I'm thinking of creating a section off area for her in the coop, so she can be in the coop without the risk of being attacked.
Please help any insights and advice would help me so much.

Thank youu!

 

[BDutch]

Please give this hen her own separated place to roost. This bullying is very stressful for her. Best is to give her a separate small coop where she can go to instead of the coop where the others are. A big coop can be partitioned in a way they don’t see each other.

There are often problems of acceptance with newcomers at roost time. And sometimes these problems don’t go away until you provide a better solution.

I only have 8 bantams, but they sleep in 3 separate small coops. For my flock its works best if they can choose where they can sleep.

To get a picture:
Last year I had 2 coops. 2 broodies with 3 chicks had their residence in a small prefab. The young pullets/cockerel were not allowed to roost with the adults and they got too big for the small prefab. After experiencing territorial behaviour in other years I decided to buy an extra coop (childrens playhouse). They happily moved into the playhouse. The broodies went back to the old coop/flock. One hen who was bullied as a pullet, often prefers to sleep alone. She sleeps in the small prefab coop now. And finally one hen moved to the playhouse (out of the blue) to join the two pullets.

 

[Yardmom]

Unfortunately chickens can be cruel to each other. A hen that is not considered strong by the flock can get picked on. Since your other birds are not picking on her during the day, it is likely squabbles about prime roosting spots (or getting to them). I'm not sure what your space is like, but if space is tight a hen might not be able to show proper submission to the higher ranks. If making the roosting area larger isn't practical, hopefully you can find a place to seperate her at night. I would keep her in sight of the flock. She is a flock animal. Flock animals are more comfortable with others in sight, and also if she is completely separated at night she will constantly be having to reestablish her place with the flock.