@Nameless422 she could but it's not an ability she could use all the time maybe that's why MC and her climbed up because she can only do it if she is at the utmost level, since Dungeon Lord's are at the very lowest of the dungeon because all the floors are above so she can control the monsters. Meaning she either needs to be at the bottom or at the top to use that authority since MC saw her status he knew she can use that ability but it has condition's so he helped her meet the conditions