At least she's had ten times the quality of life of many other hens, you can rest easy knowing she didn't die in a tiny cage having never experienced anything else, so you've done well by her.
Sometimes even free range chickens make mistakes, usually first or second generation from the cages, their instinct is incompletely recovered and they encounter many species of plant and insect that their most recent hundred ancestors may not have. It's hit and miss but since they're freeranging you're on the right track, they ought to get there. Best wishes.