I like Homegrown non-medicated laying pellets and toss a big handful of oyster shell in twice a week. My feed is $15 a bag, yuck! You may also leave a bowl of used eggshells out for the hens to eat up. Also if I get a cracked egg I toss it on the ground in their pen and they fight over them. If you can try and till up an area or over seed your garden in clover, that helps too. I'm the only person in the county that's getting steady eggs without a light right now. That thar is my braggin rights round these parts! LOL!
She will lay, hopefully!!
ETA: Get a big feeder and keep it full (I keep mine in the coop in the winter). My girls always have food in front of them.