User blog comment:Fliu/Should Lola have told the Straw Hats who her mother was back at Thriller Bark?/@comment-28966845-20170419085206/@comment-24287735-20170419133743

Agree, and I think Oda was just sketching his ideas about that Big Mom silhouette. For those who might be reading this, remember the Yonko's silhouettes were only shown Marineford Arc which is still 2 to 3 arcs away so definitely they were still ideas inside Oda's brain.