Which flock should my maimed Hen join (once recovered)?

[Rseno]

I decided to switch out my red sex links as their lives are quite short. They are a year old and we have friends who wanted to start with chickens but felt intimidated by chicks. Long story short right before they left we had a predator attack and one hen was severely injured- chunk of flesh from her back missing, and the other hens pulled out many many feathers. I've managed to treat the injuries and there's a strong likelihood of survival. We gave the rest of the flock to the friends the following day, I still have the injured hen and am treating her. It is unlikely she will ever have feathers on that part of her back again. I have her in a large 'hospital' tub near my 11 weak old chicks. During the day I have her in a small makeshift chicken tractor beside their tractor. She is still larger than them but in a few weeks they should be more on par (new chicks are barred Plymouth rocks) so the question is: is it better to try and reintroduce her to her flock or to try and introduce her to this new flock (hoping her slight size advantage will protect her from being picked on)?

 

[GodLovesU]

I would put her with the chicks

 

[my spoiled chickens]

I would put her with the chicks because I wouldn't want to make your friend nervous about having a recently recovered chicken that's being picked on,and sometimes putting a hen with older chicks can make them act kinda like a mama hen to the chicks

 

[Rseno]

Update
I introduced my hen to the flock of 3 month old pullets yesterday evening and it seems to be a successful integration!