Join the crew. Its VERY frustrating isnt it. Give her some time, and she should start laying again. 'Tis the time of year for molts, broodiness, or just plan vacations....
She may start sitting even though she doesnt have any eggs. Its been said that silkies will try to hatch a door knob if given the chance. And I've seen more than enough Silkies brood "Air", meaning they are broody but not sitting on anything at all...