They might dude, but if you aren't trained in counseling I wouldn't go down this road. You could say one wrong thing during a trip, trigger her, and have her just shut down. It could very easily end badly.
Before doing this, I would pick up a copy of Helping Skills by Clara Hill. This is basically pre-counselling 101 and will help you be a supportive partner rather than a good-intentioned one. A lot of the scientific claims in it are bullshit, but the style works reasonably well, and I think it's probably the most approachable intro.
I would obviously also have benzos on hand if you need to abort quickly.