Give her time Turkey Lover. Her mother instincts will kick in, and then you'll wonder why you were so worried. It can be nail-biting, watching her egg collection grow and wonder how she can be so neglectful and selfish leaving them and thinking of only herself. Turkey hens are really good mothers, usually. When the time is right, and trust me, she knows more than you do, The 'light' will come on and she will be sitting away. Its just the waiting game right now. Make sure her nest is safe and comfortable with little drama surrounding or disturbance.
