You ask a good question. Most of us would have reported it right away unless we knew she was doing it to her own car.
After sitting there for a few minutes both said they saw Dunn pull up in her gold Honda Civic hatchback.
Zepeda was in the front passenger seat and said she saw writing already on the car when it pulled into the space next to them.
Both said they saw Dunn bend over by each of the driver's side tires and heard a sound that sounded like air being let out of the tires.
Martinez said she went first to the rear driver's side tire and then the front. Zepeda said she did the opposite.
Both said they were confused about what they saw and wanted to get out of there as quickly as possible.
"We thought she was weird and we did not know what was going on,' Zepeda said. "At first we thought it was a prank. We also thought that it might be research on how people react to certain situations.'
After Martinez and Zepeda heard the second tire pop they started to leave and Dunn motioned for them to stop and came up to the passenger window.
"She told us she was a psychology professor and asked us if we had seen who did this to her car,' Zepeda said. "We said no.'
They explained that they lied to Dunn because they were confused about what happened and did not want to get involved. Martinez and Zepeda spoke to police and college officials the next day after seeing the incident covered by TV news and at the urging of friends.