Holly, are you going to bring that gorgeous poinsettia inside for the holidays?
As Tarev said, lightly trim back and keep in temperate conditions with bright light but shaded. I would not water it though. If it was highly stressed (way too cold), the plant simply can't utilize water or fertilizer now. Wait until the soil gets really dry and then lightly water, but mist the leaves every day or two in the meantime.
