The stay on the seventh floor lasted two months before the group arrived at the teleportation circle. In those two months, Sofia and others fought desert beasts nonstop, day and night, just to accumulate fighting experience.
The current Sofia could beat the previous Sofia one hundred times. If before, she had to think, now she could fight instinctively and do the appropriate moves. She doesn't make blunders anymore. Sofia had been baptized by the blood of desert monsters that she killed, and like other veteran fighters, she started to have the mentality of a tactical warrior. Every move and attack she gives doesn't contain a trace of hesitation. They were fast and ruthless, and she became more and more proficient at fighting monsters.