Looks to be a pullet. The male feathering - pointy hackle, saddle and sickle feathers, though those only start to come in at 10-12 weeks old, and the size and redness of the comb and wattles. Females have more round feathers, and usually won't have a big comb until soon before they start laying.
If she is going broody, you can break her, give her fertile eggs or give her chicks. First you need to determine if she actually is broody and if she is going to stay broody. Is she laying eggs still? If the answer is yes, then she is not broody. She could however go broody soon. Is she staying...