I can't take this anymore! I can't give in as it will do more harm than good. What do I do??????

I can't take this anymore. I don't know what to do. My friends boyfriend aulted me one night last week at their home. She was a very close friend of mine as so I thought. While the investigation is going on and they are being questioned, she lied and made look like I was a crazy drunk. I was told by my lawyer I cannot absolutely not speak to her now at this point since she is not cooperating and can hurt my case if I speak to her. It will appear I am not afraid of her boyfriend. it has been a week and has been calling me every day asking me if I'm ok why am I not calling her back. Today she called said for me to call her and let her know I'm ok and if we are not supposed to talk at least tell her that. Why all the other times is she going to act like nothing happend that night or say anything about that night, then say this now? Hmmmm, guilty ??? I was tempted to call her, but I didn't as it can throw the case out the window completely and then I would be charged with false