I can't remember how many days after the ovulation shed before she lays.. my memory is scrambled can anyone remind me please. thank you.

This question is easily answered with simple search on google.

But theres no definite answer as each snake is different on when they will lay after shed.

This is not a exact guide as each snake can differ a few days or so. Here it is. http://www.ballpython.ca/gallery/breeding.html