lmao what an idiot, if he wasn't confident why would he come contact her directly? Why would he literally ignore you with your silly comments when you tried to pretend to be innocent? If anything, the moment she said "I don't know who ghost ant is" she basically confirmed it. Only shitty liars pretend to not know anything about a given subject when questioned with involvement. She should definitely have known who ghost ant was cus its just general knowledge...
I hope all the villains in this manga aren't this dumb