I've bought hatching eggs four times off ebay. Best hatch rate was 60% with the Copper Black Marans; 33% for the Cream legbars; nothing from 6 RIR and 1 chick from 6 Cuckoo Marans. 10 Cream legbars in this batch and I'm not hopeful, despite doing everything exactly by the book. I've five left that MAYBE have something inthem but I'm pretty sure it's not a chick. Heyho, we'll see on Thursday.
Try shutting her in with the eggs. She may just be upset at being moved but will settle again if you persevere. The RIRxLS we've got broody just now was in a normal nest box - when I moved her to what I thought was a des res in the garage, she legged it. We relocated the Black Rock broody to bigger premises and put the RIRxLS in the broody coop and shut her in with the eggs overnight so she'd nowhere to go but sit and now she can't wait to get back in to her eggs.