User blog comment:B214/Volume 17 spoilers./@comment-24053170-20140220004506/@comment-1359322-20140220081236

In the early volumes, it's stated that Tiamat has hidden herself, in the later volumes, it's stated she has blended well with the current society.

Alaso Tannin never said that. And it's pretty much confirmed that Tiamat is tsundere to Ddraig.