CJ wasn't entirely sure why she had allowed herself and her words to be pulled in this dangerous direction. She was torn between the relief of having voiced the perennially unvoiced and the guilt at Donna shrinking like a wounded animal and the injustice of having been so ill-received when she had, after all, spoken out of concern, affection even, for these two people.
Although, perhaps, thinking about it, affection had not been her chief motivation. Frustration, maybe. Under different circumstances - over coffee on a lazy Sunday, or after a few drinks on a Friday night... But there were no lazy Sundays and when work was finished on Friday nights there was no energy left for anything except the drive home, the removal of clothes and make-up, the closing of eyes and the waiting for sleep, as you wait for an ancient computer to close each program one by one, so that darkness only came - to the screen, to her mind - when patience was almost exhausted.
And perhaps, whatever the circumstances, there were certain things that could never be spoken of, for fear that naming them would call forth their destructive power. And this unspokenness was the air vent that had kept Donna breathing in the hell she had constructed for herself, and with CJ's words the air vent had snapped shut and she was suffocating, and it was at last possible that she might seek escape.
But while she could still breathe Donna would not seek a way out, blind as she was to the desirability or even the possibility of escape. And so hell, to Donna, was other people, one other person, because she had allowed herself to be chained to him at the cost of her freedom.
Hell. No exit. Other people, or another person - always this other person.