I have a mid at KP currently. She is not anonymous at this point. She gave too much identifying information in her letter and my mid said it was obvious who she was. Regardless, according to my mid, she is VERY much supported by her classmates and administration.I don't know if prior occurrences are necessarily a given.
Matching her details with their logs, it seems like Maersk could narrow their search to a small enough list to answer that question quickly.
I also hope she can remain anonymous if she desires.