I just had a late Saturday afternoon overwork-inspired idea. Also inspired by Karin's comment about the NPS chaperone. I would bet that there is at least one interpretive ranger in each of the Parks this artiste tagged qualified and willing to become familiar with the sentencing opinion of the court (which is bound to be a beaut) accompanying her to the scene of the crime, and interpreting for passers-by exactly what is going on and why, while she removes her paintings. In fact I think it could be a hugely cost-effective educational effort, worth documenting. Especially if it has some, any enlightening effect on the culprit.
Some would say it is both cruel and unusual or at least harsh. Making her clean it up at her own expense thus saddling her for life with this debt. Think of it as a student loan without the perks...again, some would find this solution cruel.