I live in Northern California so I know from stoners - ha. I really don't care about what's alleged - I care about the research. That said, there's not nearly enough evidence-based, peer-reviewed research for a variety of reasons, including the fact that it's still classified as a schedule-1 drug (so dumb). But there is strong evidence to support its beneficial impact on anxiety, depression, insomnia, MS symptoms, AIDS symptoms, and most importantly, chronic pain. I think the science is slowly getting there. Here's a good summary on where we are with the scant science so far: http://time.com/3931863/medical-marijuana-benefits/.
As for Bonnie, I imagine she would have a shit ton of anxiety just from dealing with Nathan and Maddie. I kind of think Bonnie is a phony, though. What kind of peace, love and understanding gal marries a guy like Nathan?