Hi there
I can understand your situation. I have a 6 week old meatie in the house since about 10 days. He had a leg injury and I didn't know if he could recover, if I had to cull, etc.
Finally, after a few days the legs was OK and he asked me to go back in the coop (he followed me up to the door and tried to get in).
I let him with the others for about 36 hours.. and then he was all bloody!! They really pushed him down the pecking order and I doubt he had a good time in there. I took him back in the house.
Bad, bad idea. Now he follows me everywhere! If I go to the bathroom he follows, if I go gardening he follows.. and yesterday, for the first time ever: I was reading in my bed and he jumped on the bed and then he lay down on my legs and slept lol!!
So.. I'd say: cull it OR make her a little baby coop (that you can then use for sick birds or quarantine). I think I will do that, just a small coop to keep him away from me until the processing day.. this way I will be less attached to him (I hope).
Or.. I'll try to keep him as a rooster to fertilize my eggs and then give me chicks, but since he is a meatie I am not sure he'll be healthy enough for that (heart, leg conditions).