Centipedes don't sting, they bite.
She may be in pain from the bite, but it should be easing up now. Can you describe what she's doing?
Well there are other possibilities with things that happened night before last and yesterday. She began when I returned from being gone all day and a huge storm had gone through here with all kinds of crazy I'm guessing, and when I returned, another came with lots of lightning flashes. I was taking my dogs out first for their potty runs (I keep all my animals in my house as I'm alone mostly, disabled, and worry about the predators here) but for 27 weeks since she hatched, she's always been used to the dogs running by and barking, and they kennel after the run out for a bit, so it was possibly the lightning #1. Then, #2 possibility is that I noticed the next day, that the smaller male had taken a cruel and bullying turn, and when she attempted to walk around, sneak to me at the mansion door, or anything, he chased and pecked her and she was petrified of him, which was very new as she and the larger male had paired up and were the dominant ones until about a week ago when the battle between the boys happened (more like a display than violence) and the larger male stopped the confrontation willingly, which I'm guessing made the smaller male feel dominant. It wasn't really an issue until yesterday when he just wouldn't let my female do anything! She's so scared of him!! Running around, flying up to the top hitting herself and then finding a place either in the second story roost or the run side of the bottom behind the weed flower bushes I placed in there for them to hide in. But that male is now gone (escaped while trying to move him to another enclosure) , so after he left, I sat with her and the other male, her mate, and everything got calm, it seemed. After a while, she went back to normal and I turned the lights off, and all SEEMED fine. They snuggled together and everything. Then this morning, spazz again and just hiding up in roosting second level. Now I can open that door and pet her, hold her, etc. She is acting afraid of everything but me. But tonight I held her, gave her mealworms and oyster shells with feed, water, and put her back in her hiding spot. She stayed there and didn't come out, but when I shut off the lights and came to bed, she suddenly came out with the male and ran the fence a minute and now I think is sleeping. I don't know what is going on, but finding the centipede is making me wonder and adding to the possibilities.