Paralysis can be temporary in cases like this, especially if she wasn't completely paralyzed before the second operation. Timing is important, too. The sooner the pressure is taken off the spinal cord, the better its chances of recovery. Irreparable damage can
occur if months to years pass by before the problem is diagnosed.
She may get partial recovery with some losses in sensation, strength, or bowel and bladder control. No one will know the final outcome for many months to come. Encourage your mother-in-law to take a "wait and see" approach and not assume the results are final right after this operation.