Leo knew about Ashley that once she promises something, she would try her best to fulfil that.
When the Re: World Assessment started, she promised that she would make sure to keep everyone alive and so far, not a single one of the beasts in the Beastnet had died.
It was all thanks to her talent that could not only heal the injuries but she could also regenerate the body parts along with replenishing the stamina of her allies.
However, when Leo triggered unexpected events and unlocked the stages 2 and 3 of the world assessment ahead of time, the rate at which monsters rushed out of the portals increased to another level.
Because of that, the rate at which the beasts lost their stamina and the injuries on their bodies also increased, which in turn put a lot of toll on her mind and body.
Nevertheless, she was not the type to give up that easily as she pushed herself to the limits.
"Since I am here, you can rest now."