Its a good thing she didn't trip on the first time - most people freak out and never do Salvia again.

Doing salvia is like running a sprint - you can't just rock up on the day and expect to come first place, you need to train your body to adapt and get faster......

the same for sally-d. Take small doses and SLOWLY increase the dose until the hallucinogenic effects start happening. Even then, take it SLOW. I'm not sure of the dosage but have a look on Erowid:

www.erowid.org

and have a search there. It'll tell you everything you need to know. Remember, take it slow and get very comfortable with the drug (but always respects sally) and enjoy the ride.