Whatever you do, show your mom that you are strong. Thats what she needs right now. You have to have a positive attitude as well as your mother and the rest of your family. If you need to cry, cry. But not in front of your mother. My brother, aunt, grandma, and my own mother has had cancer, and what I learned from this is that if the person with the cancer doesn't have a positive attitude that they will make it, then they won't. See, my aunt didn't have a positive attitude, and she died last August. My brother was only 24 when he got diagnosed and he's been in remission for 2 years now. I am the same age as you, and I understand what it's like to go through that. If your mother has to get chemotherapy or radation, go to the treatments with her and show her that you are there for her. Just be a strong person and try not to break down in front of her. Be strong for your mom, and good luck to you and I'm sure everything will go well. If they caught it at an early stage, she will be fine, and breast cancer is pratically curable now. Good luck to you and your mother!