This one week old chick has what appears to be is air trapped under her skin by her neck. At 3 days old out of nowhere I thought she was going to pass. She was sleeping all day not eating and I had to hand feed water about every hour. I gave her nutri drench about 3 times and the next day she became more alert. I always noticed the side of her neck was more full then the other chicks in the group but thought maybe just her crop fuller. She is now eating and drinking on her own and acting almost as she was before. I was checking her out today as some of the swelling I had noticed seemed to have gone down. Should I just continue to monitor since she seems to be doing better? Or does the air need to come out? Pictures attached.