No she didn't. She just thinks she mistook ren for corn because he "took ren's appearance" last time. I really hope ren tells her he is (and was) corn though. AND I HOPE HER MOTHER GOES TO HELL!!!!
oh, i know, the mother is just evil. i could never be like that. hmm well, i'm hoping he does tell her, since maybe he might think she 'knows' now. he should just do it...why keep it a secret? i wonder what her reaction will be when she finds out he's kept that fact that he is corn all this time. 220-something chapters and the romance is ever slow-going lol but i really do like this manga
haha she finally put two and two together