Minions might not have otherwise been a great deal of trouble to the Servant, but she knew from past experience that a steady stream of them would wear even the strongest warrior down eventually. And there was certainly a steady stream.

Fortunately, her main purpose was distraction rather than fighting her way towards the one controlling them. If it kept them off the ones she was protecting, Saber would consider it a victory even if she was captured, or worse. Wasting no movement, she repeatedly struck out at the minions with quick strikes that weren't as powerful as when she faced a single foe. She had to conserve her energy.