Isolate her, keep her housing clean clean clean, you can try wet to dry wrapping, yes on the head is a real challenge to keep on...been there and done this.
Wet to dry is just like how it sounds...start with sterile guaze and saurate a piece with saline and place it over the wound, you want it crumpled a little, not all flat , the next piece is wet, but wring it a little more, the next piece is moist, then cover with several dry pieces and wrap in place. You do not need to wash this wound as you remove the guaze it will self debrede, when you change the dressing. Keeping the wound moist will also aid healing as new cells can travel and fill in the hole faster. The outer layer is dry to prevent heat loss through evaporation from the surface area. Don't use hydrogen peroxide on any wound, or alcohol, it will merely cause pain and kill healthy cells, actually burning new tissue growth...the best cleaning is rinsing or irrigation with sterile saline. I like vetericyn spray..it works! Do wet to dry and hold it in place with paper tape or thin strips of vet wrap ...eventually it will draw close, figure on it taking about a month to close up completely.
I hope this is helpful....
