More and better suspension is the main thing, as well as being lighter. Most other girlie trail bikes seem to be 120mm, so its much of a muchness of the Safire and the Trek, Trek being 0.5deg slacker HA. Compared to her current bike, the Fox suspension is night and day to the X-Fusion/RS mix that is on the current one. Safire also has better wheels/tyres and other component. Ideally we'd just upgrade Amanda's current one with better suspension, but by the time we've done that we can have her old one sold and cover the difference. Trying to get a Fox shock to fit her current Myka would be a pain and new forks would cost about half as much as the new bike.
Slow upload is fine, just leave it going overnight. My NAS is always on