So sorry you and your daughter are going through this. I was 33 when I was diagnosed and I had 3 cancerous nodules on my thyroid and 7/11 cancerous lymph nodes. Depending on what her endocrinologist suggests, she may have to do the Radioactive Iodine Therapy. I am just finishing mine and it was hard, but it’s a very effective treatment. One of my friends was 19 when she was diagnosed with papillary thyroid cancer and was able to have 3 successful pregnancies in her 20s. I know it’s scary and it seems like a lot, but they have come a long way in how they treat thyroid cancer and it is very effective. I hope that helps relieve a bit of stress and worry.