Shinobu would probably be the kid in class that would always sleep and have Mid-High grades.

Shinobu would be more of a Dandere in most situations. When she has someone she cherishes, she usually becomes a Yandere so no one else can have you them. 

She would obviously always go to quiet places if stressed

She's would play video games each time she gets home or it's allowed.

She's very shy when it comes to intimate matters.

She sometimes hangs out with you, but she normally sleeps in class. 