She sounds like she was a terrible student. I've had some bad students on rotation with me, and we still haven't had to pull them into the cheif's room for a talk about areas of improvement. When you tell fellow surgeons you want to be one of them, they will scrutinize you closely to see 1) if you are telling them the truth, 2) if you would be a good, hardworking, trustworthy future colleague, 3) if they can help you improve for future sub-i's or make you look good in front of the attending.
The flip side of it is when you are a terrible student no one wants you to apply into their speciality so people make it obvious you are unwelcome. I've seen that happen before, and that's probably what happened here. If you can't handle 28-hour calls as a med student with no real responsibility on a 4 week rotation, you will crumble when you have to handle 30+ hour calls q2 or q3 for 4 months straight with real responsibility as a resident.
The flip side of it is when you are a terrible student no one wants you to apply into their speciality so people make it obvious you are unwelcome. I've seen that happen before, and that's probably what happened here. If you can't handle 28-hour calls as a med student with no real responsibility on a 4 week rotation, you will crumble when you have to handle 30+ hour calls q2 or q3 for 4 months straight with real responsibility as a resident.