Take the below advice with a grain of salt, as I am no expert on this, lol.
I have only had two broody hens before, and let one hatch out eggs. But I do have BOs.
My opinion is that if she has stuck with it for a week, she just might stay. The best situation is of course if you have an incubator you can place them in if she gets off the nest.
Once the eggs start hatching, place food and water there so that she doesn't have to get off the nest to eat and drink. She will need to teach the little ones to eat and drink without leaving the other hatching eggs.
She will still leave to poo once a day but the babies need to eat and drink.
Don't move her nest until the babies hatch if you want her somewhere else (if you do, she might get off the nest). The newly hatched babies can survive without food or water for a maximum of a couple days (I don't recommend this though) and I would go ahead and move them after the first one hatches if the food and water is really far away.
This part is tricky and take my advice with a grain of salt. I moved my girl right before the eggs hatched and it worked well. It was really cold in the coop and the nest box was breezy. I didn't want my chicks hatching there.
But if you move them you take the chance that they will get off the nest. I hope this helps, and I hope others will help you.
By the way, you can plug "broody hen" in the BYC search bar and read LOTS of threads on broody hens.