Thats great to hear!!!! I am sure it takes time for the calcium to absorb. I had a mushy egg last week. Gave her the crushed oyster shells by hand . No egg the next day but a nice shelled egg the following. Somewhere on this forum i found info on all the different egg issues that can occur
You can also try bone meal to boost calcium & protein in your hen. I believe its 1 tsp added to mashed pellet feed 2-3x/wk. you can also give greek plain yogurt. The probiotics & calcium would be good for her. Just limit how much yogurt u give because it can cause diarrhea.
I bought oyster...