Lindsay Lohan did not attend one of her alcohol education sessions on Sunday,
RadarOnline.com has learned exclusively.
Dina Lohan had told us exclusively that Lindsay would be making up a session following her return to Los Angeles Saturday night. It didn't happen.
"Lindsay wanted to go to class today. She had every intention of going, but the staff at the program were unable to accommodate her," a source close to the actress tells us. "The head of the program had a prior commitment to attend a graduation, and that's who Lindsay sees.
"Lindsay truly wanted to do this today," the source says.