User blog comment:BlackWizardZeref/Fairy Tail Chapter 382: Alegria/@comment-24748439-20140501015948/@comment-1359322-20140501022000

Nah i don't think Lucy and Yukino would do that, they say they view the Celestial Spirits as friends maybe even family but if they just give and take without regarding about the feelings on whether the Spirits wants to leave Yukino or not, that would make them hypocrites instead.

Well Lucy herself also doesn't want to take the keys away from Yukino.