Advice neede on broody sussex please

Hi, My Silver Sussex went broody, and I was given 8 Bantam eggs to put under her. I put the eggs under her in the communal nest box, but feel that I should separate her as the other girls all go in to lay and one of them has broken and eaten one of the eggs!! What is the best way to do this? I can put a separate cardboard box into the coup and put her in that,  or should I take her out of the coup completely ? Any advice gratefully appreciated. I also have 2 x6 week old chicks, they are in a separate bit of the run in the day but go into the coup in a box at night, so its getting a bit crowded!

Many thanks Spana, I took the desicion to move her. I had a small hen house that the ducks were in around the back garden. I moved the ducks last night into a new area, which freed up the house. We then moved Peggy and her eggs into the house where she will be alone. On checking her this morning she is still sat tight! So I will leave her be now. Thanks for replying, its fingers crossed.

Many thanks Spana, I took the desicion to move her. I had a small hen house that the ducks were in around the back garden. I moved the ducks last night into a new area, which freed up the house. We then moved Peggy and her eggs into the house where she will be alone. On checking her this morning she is still sat tight! So I will leave her be now. Thanks for replying, its fingers crossed.

It's not a great idea to hatch in the laying nestboxes as inevitably eggs get broken and you can't really brood youngsters in the coop.   They are best separated so you've done the right thing I think.
HF

so they could be sablepoots or barbe d'uccle millefleurs then 
I have lemon millefleur poots and have now just been offered a barbe d'uccle millefleur boy so am thinking about getting a couple of girls to go with him - very pretty birds these millefluers are 

My broody refused to get off the eggs at all, so you may want to take her off a couple of times during the day, so that she can eat, drink, stretch and whatever, as they will often not eat or drink whilst sat on the eggs