She is a year old hen that started her life sickly, needing encouragement to even drink water  Her eggs are not laid often and have the leathery shell. The present egg is huge, feels like a regular smooth egg and is down low.  Last night, I massaged it up a couple of inches but it made her beak chatter.  Used ky syringed into her, dosed her with some Pet Rescue Remedy and the Epsom Salt bath.  She walks slowly with wide stance, eats...assuming she is pooping.  Her back feathers are a mess because she gets poopy butt, trimmed them, which makes prickers. 
 I can see her skin gets red off and on.  This due to blood flow?   Her vent is normal.  
Yes, thank you for the calcium suggestion.  will do that.