SN,
It is speculation on my part based on what has happened in the past in criminal cases. Most do not pay full restitution and no individual is bankrupted by the courts.
Then, there is motivation. How do you motivate her to do the repetitive mind numbing stuff quickly, efficiently and without doing further damage? I have seen people trying to erase the orange and white painted stripes, which are on rocks and trees going up Ice House Canyon in Cucamonga Wilderness. It's not pretty and the results are less than satisfactory; therefore, most of the damage still survives after at least 7 years...and added to last year on two other trails in the area.
This is my exercise area and feel disgust every time I pass this crap. If I ever see anyone doing it...it will be ugly.