Poke a finger inside the vent about 1-2 inches. If you feel an egg, give her a calcium or Tums tablet by mouth, and soak her in a shallow warm bath for 30 minutes. Massaging the lower abdomen toward the vent may also help to pass a stuck egg. If there is no egg, then check her crop to see if it is empty or full, hard or soft. Look her over closely for presence of lice or mites on lower abdomen and neck areas especially. She could have something stuck in her gizzard, or she may need to be wormed with Valbazen or SafeGuard Liquid goat wormer. If you are in the US, she could be starting to molt, and they can act off or sick. A pale comb during this time is normal, but a purple comb is never normal, and may be a sign of heart or breathing problems