Bella woke up but she had sprained her ankles, she was lucky that this was the only injury she sustained, there was no telling what else awaited her.
Bella was terrified, the zombies in there should never be allowed out here or humanity would stand no chance.
She had lost her team and this would no doubt weaken HELL but she was grateful for their sacrifice or she wouldn't be alive right now.
The fragment she saw, she couldn't explain it but it felt familiar, there was something comforting about it and she hoped that the cave collapsing on itself was enough to destroy it alongside the explosion.
She had to get back even though she was some distance away from the vehicle and if she should be attacked as she was right now, there was little she could do to defend herself.
She took a moment of silence to show respect to her fallen comrades, they sacrificed their lives to save hers, and this was the least she could do.