Radiation is normally tolerated very well. You just lay there on the table and it takes all of 5 minutes and you're done. I had it to my brain. I lost hair in the area it went in and the various areas it came out. I tanned my skin, which is now going away. If it's to her head, they will form a mask for her head so it won't move during treatments. It made me have a metallic taste and the radiation center had bowls of mints every where, so it must be a common side effect. She'll do fine with it. Wish her well for us.