If she's like my Minorca that went broody, she may not break until she gets chicks and even then still be obstinate. For two weeks I took eggs & removed her from the nest 4-6 times a day. It was down to buy a wire cage to suspend her over a fan to cool her bottom, or let her have some eggs - so I let her have some eggs. (Though I've recently read to put ice cubes in the nest, but that seems kind of harsh.) Even over a week after she hatched her chicks I caught her hopping up in a nest and rolling eggs under her! I had to isolate her and the chicks to keep her from trying to hatch more. I took her surviving chick last week (the one I thought vaporized - it was hiding in the coop foundation) and this week she is trying to go broody AGAIN! Poor girl is still rail thin from basically 5 weeks of brooding.
If you want to give her some fertile eggs, I get about a dozen a day. They're mutts - Silver Spangled Hamburg over Minorca, Delaware, Cuckoo Marans, EE, and Black Australorp. You can have your pick, as many as you want. My mom lives in Chesnee and I can drop them off next visit or if you're in Greenville/Taylors you can pick some up.