Thank you for rereading this. I did know I wasn't dealing with a larceny. I am sorry if my wording may have confused you.
She was pulled over in the car, so I'm assuming that the car was moving when she was stopped and that she wasn't just sitting outside of the school in the car. If they just happened to stop her within 1500' of the school, the facts would break in her favor as it's not her fault where the police chose to pull her over. Then the time of the incident and whether it was school hours or not should not be an insurmoutable problem.
SHe should always have an attorney on a criminal
case, because even probation could give her a criminal record
for the rest of her life, while a lawyer would be looking out for her record and her rights.
As far as school being in session, if she's on school grounds with drugs, the worst case scenario would be that the school was open and in session. In CT, possession near a probibited location has a 3 year statutory minimum.
If the school were closed for the summer and nobody was there, the facts are more favorable to her. In this last circumstance, I have been able to negotiate a reduction and a probation offer for many of my clients.