@bud: I believe demiugre does - he mentioned a second part of the plan. He everybody else not to kill a certain guy - that guy is Momon.
Regarding Evil Eye, the surprising thing is how accurately she measures people. Even Ains has to physically test someone out to assess their strength. Maybe she does have an evil eye out another ocular power to facilitate that. It's in her name after all.
Entoma was unfortunate to run into bug spray, but I don't think Evil Eye knew about her weakness prior to the actual engagement, which would suggest she thought of herself as superior even without relying on bug spray being super effective.
Nabe too ran into a magic resistant Dragon, but that was on a much different level.