Another prayer added here.
A neurologist reviewed the CT Scan as well as the MRI and estimated the tumor to be around 5 cm (the size of his fist). However, it is also extremely slow growing and had been growing for "years and years and years". She is scheduled to have surgery to remove as much as possible (he said the will not be able to get it all)first thing Monday morning. Depending on the pathology, she could be perfectly fine for a long time given the non-aggressive nature of the tumor.
Odd thing is, there is a neurosurgeon conference in Sea Island Georgia this weekend. The surgeon that is handling the operation is one of the best in the south. For some reason, he did not attend the conference.
Thanks for all your thoughts and prayers.