If you do not want her to be broody, you can put her in a broody breaker cage.
That's basically a cage with a wire mesh floor, elevated, with nothing to use for a nest. Provide food & water, and a perch is optional.
The hen will be very unhappy and pace and fret, but in just a few days she should go back to normal.
Yes, she will try to peck you when you pick her up.
So put on a thick winter coat and gloves, and pick her up anyway-- you're a lot bigger than a chicken!
If you want her to stay broody, just leave her alone. As long as food and water are available somewhere in the coop or run, she should manage her own meals just fine.
