She was already in love with the school prince and now is already in love again... why the rush? Moreover, shes aware hes heartbroken. The timing of that confession was just weird.
But Mineta being popular with the other girls makes no sense either. Most of the time hes just a righteous grumpy asshole. Shes already tall, there was no need for him to be this short, isnt it too much at once?
Also, which size are the doors in Japan? She was 1,78 so how come now she dont fit in the doorway? Was that an attempt of comedy?