Soldiers survive all the time with war shrapnel in their bodies, so if your hen seems to be getting better and she's behaving normally, she should be okay.
Can you post a photo of this swollen area on her thigh? It may not be related to the staple, which I believe may have passed out in her poop.
Can you post a photo of this swollen area on her thigh? It may not be related to the staple, which I believe may have passed out in her poop.