This question has options. Answer the question about text:

She had glanced away still smiling and when she saw that response her smile immediately vanished ! It was as if a photograph of her past love just appeared in front of her screen . This was only the second time she actually saw someone use that " word " . Her facial expression quickly transformed into one of discomfort .

Why is the word that was used causing her such discomfort ?
Options: 1). She enjoys hearing that word . 2). It 's a great and lovely word . 3). It 's one of her favorite words . 4). It 's a trigger word that makes her feel terribly ashame of herself .
4).