The entire surgical process needed to flow smoothly. All the surgical instruments needed to be disinfected and someone had to organize the equipment.
If there was no one to help, she would have to be responsible for disinfecting everything, doing the operation, and handling all the various equipment. This would prolong the duration of the surgery. It was very likely that An Yimin would bleed to death during the surgery.
Jiang Yu would never allow such a thing to happen. After An Yimin was pushed out of the operating theater, she had checked on An Yimin's emergency surgery to determine the medical standards of this hospital.
The answer she got was that the surgical doctors in this hospital were good enough. If she had them as assistants, they wouldn't drag her down and she wouldn't have to look for people from elsewhere.
They could perform the surgery in this hospital. Using their tools and people would save them a lot of trouble.