Emma is currently facing peak-grade monsters. All these days she continues fighting those Monsters. Well, previously she did not pay that much attention when she came inside of the deepest part that those Monsters already had a stat which already reached the limit of the epic grade.
Naturally, she did not come inside of the danger zone alone. Previously she would come inside with her team. She would come inside of that part of the danger zone with the prince but after the king told her to protect Livia, she almost stopped coming in that part of the danger zone to face those Monsters.
So you can say she finally came back here after a long time. Also as she did not have any team made right now she was facing quite a problem while fighting those Monsters. Some Monsters have superior strength or some Monsters have superior agility, naturally unable to win against those Monsters that easily.