She's eating and drinking normal and her poop is normal, eyes and nose are clear, no sneezing or coughing and no foul odors and staying with the flock but is breathing heavily whenever we get close to her, or right after she has been on the move in the yard or when she is on the roost in the chicken house at night, she's been isolated for the last couple of days and trying to communicate with the rest of the flock, any suggestions besides ending her life (that's what all the vets have told us to do).