It helps if you hit the "quote" in the bottom right of the post you are replying to. Everyone then knows who you are giving advice to and it saves a lot of confusion on everyone's part.I would move her because she'll need to be by herself when the chicks start hatching. I've had to move my broody buff orpington on many occasions - I don't have a rooster and in the past when I've "borrowed" fertilized eggs, I've wound up with mostly roosters. This year I sacrificed two regular eggs and let her sit on them in the main box for about 3 days and then I moved her to an separate enclosure - she ignored the eggs and sat off of the nest so I kept trying for several days and finally she settled down on the eggs. During the third week I bought six newly hatched pullets and put them under her, three at a time, while I removed the eggs. She was surprised to say the least! But she immediately went into mothering mode. She's raised several batches on chicks and is a very good Mother! But she becomes VERY hostile towards the other hens when she has chicks so I would definitely give her separate space.
And, no, you don't have to move her. I have 2 broodies raising chicks right now in an over crowded coop. Sometimes it helps the momma hen to be moved to a separate location, but you don't have to move a broody. I am pretty sure that our grandparents didn't do so, they just said "survival of the fittest" and let nature take it course. (Actually my aunt never did (one generation closer than our grandparents) and she lost a few weaker chicks, but mostly she had more chickens than she had space and was always giving them away each spring)