"Failure to report to work within 24 hours of a request to report"
"Absence from work for one (1) or more consecutive days without excuse acceptable to the company "
Since Donna has reported been to have nine years of excellent work and attendance. She wouldn't have to apply for unemployment if this method had been in place during this dilemma. This was certainly a first time thing for Donna to call to work for a day off, and it was for a family event. Donna could have also made it clear as referring to this event to a "family emergency."
"Habitual tardiness"
Donna was informed of her termination, the day after the graduation (the day she called off). Therefor, the hotel would technically have to pay Donna's benefit for unemployment compensation. The hotel would definitely be held responsible due to the supervisor's decision regardless of diminishing the supervisor's image at the workplace. But would reflect on the hotel as a whole legally in court, Donna would be in the right.