I'm sure she's fine and healthy - and no one meant to "bust" on you . We're just trying to help. That's just the way text-only stuff reads, sometimes. That's the one thing that stinks about written conversations!
With that in mind, quarantine is not just about diseases, really. It's also about what the birds have been exposed to over their lifetimes. Think "kindergarten class." Every child, and every new teacher, gets sick more often that first year. It's not because anyone is diseased. It's simply because the youngsters are exposed to everyday viruses they've never encountered, before. Older children (and hens) have already developed immunity and are often carriers. For younger children and juvenile chickens, exposure to multiple "new" viruses and bacteria can be a major issue. Sometimes it can kill. That's just one more reason for slower integration. That, and the nasty mess those territorial little beaks can incur!
