Hi welcome to health care magic forum.
the reason for abdominal pain
is probably this malignant process or surgery effect. this is to be expected in such pathologies. numbness
and paion in back and stomach can also be sign of CBD or pancreatic tumors but it should be evaluated by further imaging tests. numbness isnt something that should worry her at this point. she should find enough strength to fight against this serious disease
Hope I have answered your query. Wish you good health. regards