Messing with egg production

[ZennyHenny2020]

I've got a broody Wyandotte, no rooster. She has been broody for about 3+weeks and we've tried EVERYTHING to get her to stop, except buying or incubating babies. Now my 3 other girls have quit laying so we've had no eggs for over a week. Is that normal? My broody one has been separated for several hours a day for the last 4 days, still nothing. Any suggestions are welcome!?

 

[CluckerFamily]

Where is she broody? In a nesting box?
Did you try putting her in a crate with her own food and water until she breaks?