I'd take those eggs out and pitch them if they're more than a day or so old. Encourage them to keep laying everyday and collect eggs often. Store them in a cool place fat end up in an egg carton and turn them 3 times a day (mark an "x" on one side and an "o" on the other to keep track of turning).
Once you've collected enough fresh eggs to hatch, encourage your hens to sit. Put some golf balls or plastic Easter eggs in the nest box or wherever you hope they'll sit. Broodies are a little trickier than just popping eggs in an incubator, so keep collecting eggs until someone goes for it. Set the freshest eggs under your hen.
If you have Silkies, chances are good someone will oblige you. I have 4 Silkie hens right now and every single one of them has been broody at least once since they started laying. They all pretty much laid eggs for a month or so then set.
Good luck!
