Marisa's utter lack of reaction is perfect; there's just so much more to it than merely "not listening".
Eh? So you're named Mitsuko? That's a lovely name, the same as a fine perfume! Okay, why don't you come to my house? There are lots of friends for you there! It'd be really great if you could get along with everyone! We have lots of western clothes, too! Maybe Japanese clothes would suit you better? Yes, a nice indigo kimono would be--...don't you feel bad for her?!I picked this thing in my forest!Sexy vegetable!"My forest"...?When did the Forest of Magic become your property?Since this morning!Excuse me.Ah, Marisa just came by now with another weird thing...What are you doing, Marisaaa?!Holding this poor dear by its hair(?)...Will she care for any human-shaped inanimate object?Let's put it in miso soup and eat it!Ah, Alice.Welcome.Hey.Or we could pickle it, too!Not listening.U-fu-fuThat hurt, didn't it? But it's all okay now. I won't let anyone hurt you anymore.