It would damage her left side of the brain. Language is controlled by specific parts of the left side of the brain. She couldn’t talk in a full sentence.
Half of her body would be useless. Her right hand is almost giving up. She was taking speech and physical.
She could die, blood clotting within the circulating system. She will lose any remaining sensation or muscle control in the extremities.
In conclusion I don’t think she should have the surgery because it’s too risky for her and her parents.