Smoking weed for anxiety? ‼️POSSIBLE TRIGGER‼️

I have a friend who has severe anxiety and PTSD.  It has gotten to the point where she can't leave her house. She's tried all the pills and medications and she is desperate. 
At this point, she is willing to do anything to make it stop. She's been having suicidal thoughts lately and it's scaring the shit out of her. 
She is thinking about using marijuana to try to relax during her big attacks. What are your views on this? Is there a situation is which weed is okay? Healing, even?