What does this quote have to do with Ina? In no shape or form is Ina considered a villain... she's probably the most well behaved person in EN.
Probably ment to be more about her Lore. She's a cultist who got her demonic powers worshiping pretty much Cthulu. And she's trying to take over the world for her god.
Same reason you probably wouldnt want to be friends with Calli who is a grim reaper or Choco-sensei who will steal your soul.
