Dear Marjorie,
Waiting is so hard.  I would keep calling tomorrow, until you get an answer.  You're mother's decision, is certainly understandable, but maybe she'll have a change of heart if, unfortunately, the news is bad.
Was wondering what hospital you are using, as I was at Fox Chase, myself.
This is always a good place to sound off.  Let's hope you won't need to again and the biopsy will be negative.  My prayers are with you and your mother.
Jerry