Yes, please tell us how long the hen has been sitting on the nest. If the eggs are only a couple days to a week in, then they may not hatch but I would still go for it. Since you found the eggs pretty early on after you lost the hen, there is a good chance they will hatch.
We've had the same problem about three times, first time was a little different but about the same. First time, our hen had been setting on the nest for 2 1/2 weeks I think, so the eggs only had 1 1/2 weeks left. Our dogs scared the hen off her nest during the night, we put her and the eggs in a cage but she was done setting after the dogs chased her. We took her eggs inside and incubated them in an egg carton under a damp towel, under a heat pad, in an aquarium. Our first makeshift incubator, lol. Out of the 21 eggs, 7 pipped, and 5 hatched.
Second time, the hen had only been sitting for 3 days. She got scared off and we took her eggs inside. Our incubator was full already so we borrowed our neighbors the next day. I didn't get the incubator setup until two days later though, meaning the eggs didn't have heat for 3 days. The eggs did not hatch and we were very disappointed, mainy because on their 24th day we saw 4 or 5 of the keets move inside the eggs. (I think we may have had too much humidity during incubation, but I'm not sure)
Third time, the hen had been sitting for 3 days aswell. I went to check her one morning because we hadn't seen or heard her and I found out she had been taken by a critter. We put her eggs in our friends incubator right away (They had only been cold for a couple hours probably) and 5/7 fertile eggs hatched.
So, I would say, definitely keep the eggs incubating until past the hatch date. Maybe none will hatch, maybe they all will hatch, you never know. Good luck and keep us updated