I worry about my broodies, there's been enough of them now to have seen their... scope.
The perfect momma sits diligently, minds her manners, and does everything by the book.
The angry broody... screams and carries on anytime anything/one gets near, offers up death pecks, doesn't take grief from other hens when leading those chicks around. Might face down a hawk and get carried off in the effort...
The Hoarder... you'd be amazed at how far they can roll an egg, or just how many they think they can cover. Might also have angry broody tendencies.
The half-hearted... I'm sitting! 8 days in! Just kidding. Broody again! Kidding. She never really wanted to hatch eggs anyways.
The copy-cat... You're sitting? I'll sit too! (might also be part of the "just kidding" type, aka the "sympathy sitter")
The "I'm never getting off these eggs EVER"... Not even to poop. I'll starve before I get off these eggs!
The chronic sitter... "These chicks don't need to eat, do they? I could stay here forever..."
The repeat broody... "Sorry kids, at 3 weeks old you're on your own! I feel the call again!"
The great broody/bad mom... "I sat and I sat and then OMG, what IS that? Is there something crawling around under me, messing with MY eggs!?" *peckpeckpeck* ... Not even realizing those were eggs hatching... Every. Single. One.
With new broodies, you gotta give them a go to see what they can do, to learn if you'll ever let them try THAT again.
It's ok to worry a little bit, just don't stress over it. Cover your bases, give her her own space, mark the eggs, wait and see. Kick her off once a day if you can't tell if she's been off.
Nothing stinks worse than a massive, gnarly broody poop, and you DON'T want it on the eggs.