Yes, neither are my thoughts about her. I think some private counseling may be in order first
She should pay the professonals' hourly rates and costs of supplies, and the cost of have a Forest Service member present to supervise - and then a fine of $25,000 or more per piece of graffiti.
She should be required to disclose all places where she left any graffiti - because hikers keep finding more. Each instance of undisclosed graffiti or damage (she scrambled across petroglyphs, for example) should be treated as an additional offense with more work and another substantial fine. Better hope you didn't destroy the evidence in your digital camera, girl.
Afterward, she should do a few thousand hours of trail and wilderness preservation work, carrying and using a mattock and a pulaski, with her work documented on instagram as part of a 'no graffiti' Forest Service Program,, blurring her face and without using her name.
Finally, a year at a Leave No Trace school.
After that, we can begin to talk about the serious part of her punishment.
It's soft, I know, but I feel like giving her a break today.