Anxiety, Tinnitus, Misophonia?

My best friend just got diagnosed with all three. She doesn't talk much nowadays and spends most of her time alone. She gets easily irritated and sometimes violent. What do I do to help her? It kills me that she wouldn't take my help. I have tried giving her space but I feel like we are getting distant and I just can't let her be alone, especially now when she needs me even though she doesn't understand it.