. OH dear - definitely stress related. I would keep the kittens in a safe room - at least over the night hours so your senior kitty can have the rest of the house to herself. For sure I would at least do that. You can purchase Feliway plug-ins - natural cat pheromones that will help your senior cat to relax. Although - I don't think that will solve the problem. It is possible she will not adjust well to the new additions, ever. At that age - a senior kitty - you can't do much to change her wants and needs. And in her mind - she wants nothing to do with these kittens. The only thing I could suggest would be to talk with your vet about something to give your cat to calm her nerves and stop the over-grooming and self-inflicted wounds. If you can allow your senior cat to have the house to herself for at least half of the day - she might start to relax and look forward to the time of the day when the kittens are locked in their room. It is really hard once they are that age to adjust to a new kitten/youngster let alone three of them. It is just too much for her to handle all at once. I wish you the best of luck in this situation - not easy by any stretch. 
