Hey thanks guys, really appreciate the input! It's still frosting at night so I worry about her being cold all by herself. I'm sure I can jury-rig a wind break etc for her, maybe a thick blanket over the whole mess, I just don't have a lamp at the moment. Sounds like that'll be enough for her...
Is there any alternative to segregation? It's still getting pretty cold at night here and I don't have any way to keep my broody one warm enough at night except to put her in the hen house. I've tried separating her out all day but as soon as dark falls and I put her back in the tractor she's on...