User blog comment:Water Dragon Slayer/DREAM BATTLE CHRONICLES: FIRST MATCH!/@comment-6152051-20130716163311/@comment-5268982-20130716165007

Plus, Minerva has her weaknesses too: She probably can only teleport/switch the places of objects in a certain, limited area, and she also seems to take others' objects when they do not hold them, as she has never taken Erza's swords from her when she was about to slash her. Now as for how Lucy can take advantage of those weaknesses, see my comment below :P