My wife received her parole papers. The said she had to do a drug program. How do find out if it's on the street or inside?

Most likely it's a mix of both. The program will probably be in some reentry facility that will alternately offer the drug counseling but also job placement - where she works on the street but sleeps there at night... for a transition period leading to getting all the way home (remember there is a range of possibilities we are just speculating...). You may obtain all of that information as it will be on the Parole Report as approved by the Board.