User blog comment:Miskos3/Fairy Tail Chapter 380: Hell's Core, Review/@comment-3424593-20140411135138/@comment-7418318-20140411135508

It doesn't work like that.

She took-over that tentacle thing while it was connected with her, without absorbing it into her body. It's most likely still the same as subjugating any other Demon, just without pulling it into her body.