"Why don't you just... ugh! Why don't you just go kill yourself!"
The room was silent. He looked at his sister, and saw everything he's seen in her since birth, collapse.
She gasped, realizing what she said has changed everything. Changed her view on herself, her brother's view on her, and how shitty she was as a person.
He looked at her. Hatred for her boiled in him, and he vowed to remind her of what she said every day, every fight, every complaint, every time she would ever get hurt. Remind her of what she did and how she was an awful person.
"Oh my God. I... I didn't mean that! No that's not what I meant to say at all!" She cried out to his retreating figure. She fell to her knees, vowing to never forgive herself and love herself ever again.