User blog comment:B214/Question and Answers 4/@comment-26216310-20150403114307/@comment-16281343-20150403130631

That is bound to happen as she fell in love with him. Also there's a certain bird hovering around preventing a certain cat on doing things to a certain dragon.

Also, it is not like Koneko hurls physical attacks to Issei all the time, is it. Koneko's attacks on Issei during perverted times is limited to verbal, sometimes will lead to physical attacks but that is far in between.