One thing additionally I would say if you want to show the reality of the sport, is to forward her to go to the World BASE Fatality List:
http://juliabell.home.att.net/
This shows all the people in BASE that have died jumping. Several on this list have died after 500+ BASE jumps under their belt. So the reality is, the risk can be great.
Not only that, but If you want, have her email michelle.knutson@baselogic.com (my wife) who also BASE jumps. She had a nasty cliff strike after 125 BASE jumps. She was in a wheel chair for 4 months, and was not fully recovered for almost 2 years.
This was in part due to her lack of upper body strength to perform rear-riser corrections with a 180'. THis is a problem that almost all women have as they do not have upper body strength like men do.
This, in both our opionions, are the most commonly overlooked detail with women getting into BASE at any time.
Think about a 110Lb woman on an F1-11 240' 7-Cell canopy trying to pull a 180' riser turn. Not as easy as it seems. Mick Knutson
* BLiNC Magazine "Everything you ever wanted to know about Parachuting, but didn't know whom to ask."