Yes, she has to be broody first. A broody hen will sit constantly for weeks only getting off eggs to eat and poop. If she is broody then you could order your "nice quality eggs" and place them under her.
I don't know where you're from, but I've had broodies hatch eggs in the dead of winter and she kept the chicks warm. They were all fine. Of course, I live in NC, so are winters are rather mild. I've decided to wait until spring to have my broodies hatch eggs this year just to make sure they thrive. Some broodies leave the chicks at 6 weeks so they'd need extra heat until 7-8 weeks.
I don't know where you're from, but I've had broodies hatch eggs in the dead of winter and she kept the chicks warm. They were all fine. Of course, I live in NC, so are winters are rather mild. I've decided to wait until spring to have my broodies hatch eggs this year just to make sure they thrive. Some broodies leave the chicks at 6 weeks so they'd need extra heat until 7-8 weeks.