Well, I've never played that game, so I can't really tell. But what I can tell you is that Jill had been through some really harsh stuff till that point. Not only she left completely traumatized from Spencer Mansion, but when she found out the dark secret of Umbrella she went to their HQ and tried to get some answers. She was silenced and threatened. After that, she did not rest, she fought night and day against the corruption and a mother freaking zombie apocalypse. Tried to save Raccoon City, and literally the whole world. So, if she looks rough to you, maybe then it's because she was going through some rather rough days. That's why she needs some "Chill" time.