Castle farm
strong language directed at someone so young, my hens are looked after to a high standard.
It doesn't matter how old you are. If your not grown up enough to take care of your livestock correctly you shouldn't be keeping them until your are old enough to take responsibility.
It makes my eyes water the number of times you see posts by people that haven't got a clue what they are talking about.
If you are not totally certain it's the correct thing to do then don't give advice.

A broody hen is actually colder than a bird that is normal activity by about 2 degrees. 'Cooling' her down is a load of clap trap perpetuated by people that have picked up this bit of old wives tale and think it's true.
She needs to be fed and watered and given something to do, preferably in a coop or run on her own. She should not be punished for doing what a hen is supposed to do.