This article is an unconfirmed theory. Please do not treat it as a fact.For other analysis and articles, see Articles. For speculations and theories, see Theories.
Note the butterflies... everywhere.
While Gertrud and her minions' relation to butterflies is quite evident, there is
a less obvious but substantial nevertheless connection between at least Mami (we don't really know yet if that extends to other magical girls) and spiders.
Also of note is the fact that Mami doesn't destroy the butterflies but rather "free" them.
Butterflies flying away after the antonies have been shot
Mami catching ep2's victim with a web-like spell.
Gertrud trapped in Mami's web.
What seems to be a butterfly trapped in a spider's web, seen just after Gertrud's defeat.