These are just theories of how mamono would protect their husbands from other mamono...
Ghost: To keep intruders out of her happy home, the ghost will go "Amittyville Horror" on you.
Wererabbit: She will flying jump kick anyone who tries to take her beloved friend (husband) from her. (cheerful does not mean docile...)
Ryu: You do not want want to tick her off, let's leave at that.
Arachne: the area around her nest is lined with webs...
Ogre: Beats you senseless.
Minotaurus: Read Ogre.
Kraken: Uses her ink, to confuse enemies.
Kunoichi: Uses traps and smoke bombs to drive away pursuers.