- Liar. Granted, as we've just established, that isn't the ONLY reason.
Give yourself some manner of reward if you guessed that the dress wasn't actually Ellen's. I considered whether she would own something like that herself, and she really wouldn't. Nanase, on the other hand, would, and their outfits tend to fit one another well enough that they share.
It is likely, of course, that they make an extra effort to NOT leave anything of Ellen's at Nanase's home.