he doesn't know. She only lets you know about her condition after you make her officially a girlfriend. If you don't, she is too flabbergasted by your rejection to explain why she locks up. You are kind of right about the king's game through
he does know. she tells you about her "problem" AND you potentially make her your rescue-girlfriend, long before the xmas party.. "Sam doesn't know her enough to take the bullet for her in the Christmas party" xmas party is literally the last thing before the end of current content.