User blog comment:FairyRaven/Fairy Tail Chapter 437: Magnolia, Review and Commentary/@comment-49.150.245.77-20150525105228/@comment-49.150.245.77-20150526114400

from the very beginning, Mira and Lucy are close to each other pre-Lisanna revival.

After seeing Mira, who always welcomes people who come in their guild, maybe that's why Lucy cried. As if she remember those days from the very beginning. :D