Bill was confused as to why Erin was walking back to them so slowly, but he just figured she might have been exhausted.
He was just glad to see her alright, but he couldn't spot Mako anywhere with her.
He quickly ran over to Erin who was barely able to keep her balance and keep moving forward.
She looked up and saw Bill racing towards her as fast as he could. Since Bill was also pretty exhausted, he wasn't as fast as he was but still, he quickly made it over to Erin.
As soon as Erin saw Bill, another wave of guilt washed over her as she knew she didn't have the heart to tell Bill what had happened.
Defeated by her overwhelming emotions and exhaustion, Erin collapsed onto the ground with tears in her eyes.
Bill was still a few feet away from Erin, but as soon as he saw her fall over, he used his Wind ability to boost him forward, and he was able to catch her before she fell to the ground.
