I got four chicks (I don't know how old they are) from a friend when he asked me to prom. I put them in a large box with food, water, newspapers, and a heat lamp. They all are doing great except for Helen. She is a little smaller than the rest, and when I first saw her I knew something was different with her. She stood apart from the rest and she didn't run around. She just stood there rocking slightly back and forth. My mom and I checked her out and saw she had a large poo stuck to her bottom and we gently wiped her bottom until it came off. After that she was doing great she was running around, like all the other chickies, and chirping a little bit. Then come this morning when I went in to make sure they had food and water, I saw Helen and she was once again standing in the corner, but this time she had trouble walking. She was stumbling all over the place. I feel I should mention that my sister had a friend over who was a little rough with Helen yesterday. She would try to force her to drink and kept grabbing her and trying to wrap her in a towel. (I feel like I should also mention this friend is 16 and was told multiple times to stop and didn't ) I didn't think that that would have much effect? I don't know of anything else that would have injured her. What can I do to help my poor little chick?