I have a friend that is suffering through a lot of anxiety...

Let's say I have a young teenage friend that is suffering from serious anxiety due to the abnormal amount of verbal abuse incurred from their parents. I mean, yes, it's just words but this individual suffers from serious depression and mental abnormalities that makes her completely shut down in stressful situations. She is breaking down everyday because of this. She cannot enjoy life with her current family whom yells at her everyday.

What advice do you have for her? What can I do?