It is possible, it might be similar to a house arrest-type arrangement, too. Whatever the case, 60 days is a bearable sentence in light of this being a parole violation. By the short sentence imposed, it would appear that the PO had a little more sensibility with a positive THC test than if another drug found. Your girlfriend needs to think before smoking until her parole time is over. Then next violation is going to be a lot longer. It can't be worth going back again and again.