She seems to have undergone right hemithyroidectomy for right sided
thyroid swelling and biopsy report if shows features of papillary carcinoma then definitely she needs to undergo completion thyroidectomy to remove left lobe of the thyroid gland. This is very common in clinical practice and often required in such situations. Prognosis of papillary carcinoma if excellent and she will get complete cure if completion thyroidectomy with post operative radioactive iodine ablation is given
Next Steps
Consult your oncosurgeon for more information