The impression I got is that Satori (the big one) is paraphrasing the little one's emotions rather than repeating her thoughts. The lines in post #970865 came from the eye and referred to the girl in the third person. I'm guessing that third eyes and satori are symbiotic species in this comic and that petit Satorin is a juvenile who is attached to an older eye.
...I just wanted to play with Petit Satorin... since you seem really busy with your work, Onee-chan...That's why you cannot cause trouble to others.Let's all go and play together next time, shall we?Okay!Everyone's all friendly!You were making a little too merry, Koishi.Uhh...that's because...That's why the two of us...Smile~Besides, I wouldn't refuse if you asked properly.That's because I want to spend more time with all of you too.Closeness!Onee-chan...