I want to entirely rescind my comment from the previous chapter.
Winters is not "kind of a dick", he's a total douche, and apparently completely socially inept.
"Why is she reacting like that"
Dude, maybe because someone that seems like half a metre taller than her suddenly starts aggressively yelling when asked a simple question. You know how shitty her condition is too.
Also, anyone else betting his family is paying that other doctor to actively mistreat her?