I guess you decided to skip QT?

Have you seen an ovulation? That should occur before the pre-lay shed.

Do you have any idea what was going on with this girl before you got her? Was she cooled? Bred? Showing any signs of developing behavior such as bowl wrapping or glowing?

Also, from what I've read, it would be unusual for your girl to still be eating, especially eating such big meals, if she is that far along in the process.