Mikan couldn't logically stay in front of the door forever. She needed to eat, and she could use a distraction from the worst day of her life being played on repeat. But she can't afford to stay away from her door for too long, so for both places, she is going as frantic and quickly as possible. In both places, she is sobbing hysterically, still remembering the horrors of her room.
At the library, Mikan is pulling out every and any book she can grab. She's not even bothering to look at the title or contents, she can't afford to waste that much time.
At the kitchen, she forgoes her usual method of slowly putting things on a tray in favor of shoving mushed sandwiches and bottles of water in her arms, as many as she can carry.
library/kitchen
At the library, Mikan is pulling out every and any book she can grab. She's not even bothering to look at the title or contents, she can't afford to waste that much time.
At the kitchen, she forgoes her usual method of slowly putting things on a tray in favor of shoving mushed sandwiches and bottles of water in her arms, as many as she can carry.