And yea, she should since they only just met. I don't really mind if you don't use Japanese honorifics (like if your chara is a foreigner and doesn't fully know the culture), but it does help with the setting.
To answer vals question, yes assume what is in my post happened.
for snow, both yours and jesters characters will encounter Sasha and Ryutaro as they exit msdonalds and go into the street. The plot will begin when this happens
That is indeed true. And what is going on with Reno should remain a secret for now. And yea, details that Yen Sid would know would be very vague since it isn't anything that has been seen before
You all will get what I mean when it finally resolves in Twilight Town.