How long do you let a broody bird go?

This is Bean, a beautiful year old backyard blend. She’s been broody for the better part of a month now and shows no signs of giving it up. I don’t have space for more birds, so getting her babies isn’t an option. I’ve been kicking her out of the nest for at least an hour a day so she eats, drinks, and does chicken stuff while her sisters rush in to lay eggs. I’d be okay just continuing like this, but it’s over 100 degrees in the coop now and I’m getting worried about her. What’s the play here? TIA.