"She's not alone" at the end ... think a touch of jealousy might start creeping in.
I hope she can reason it out if she realizes that Mitsuki isn't alone but decided to call her on a whim despite that
Yes, I mean, even if in that moment Kanna went another place; being in the other side of the phone, if I was with someone buying/just walking/etc, normally the first thing I would ask if I see them in the phone is if all is alright just in case, because calls normally are for when something happened; but if the answer is "oh I just wanted to talk to my friend because of an impulse".... My options are: 1-u think I will kidnap u or something? , 2 - u had a premonition? 3 - U have a crush symptom my friend xD