User blog comment:Mamerge/What if Natsu is END? And Silver is Future Gray?/@comment-117.233.1.90-20140411120036/@comment-7418318-20140411145541

Oh I don't know. Mira absorbing Sayla and being able to turn into a mix of herself and Sayla later in the series does have a certain appeal ;)

Maybe once she's beaten the Demon up enough, Mira will be able to take her over.