A regular incandescent bulb will work just fine for her overnight.
Wounds of any kind on a chicken must be dealt with immediately, or that chicken will be cannibalized by the rest of the flock no matter what their age.
From the Chicken Health Handbook, "As soon as a wound is discovered, isolate the bird. Clean broken tissue by pouring peroxide on it. As the peroxide bubbles up, it lifts organic matter so it can be rinsed away with more peroxide. If the injury is serious, remove feathers from around wound so they can't stick in the wound & hinder healing. When wound is clean, coat it with neomycin in the form of Neo-Predef powder (for an oozing wound) or neosporin (for a dry wound). If the injury is quite large, wrap it in a gauze bandage & tape in place. To keep pus from forming & giving bacteria a place to grow, change the dressing daily, clean it with peroxide and reapply neomycin."