Abby was fully aware that she wasn't on vacation; vacations meant she had her own clothing and shoes to wear. It was also clear that she still saw her as a flight risk. "And just where am I going to escape to? I have nowhere else to go!" Besides, no one cares what happens to me.
Frustrations over Callen's words and his constant pushing was just sending her further away from what little stress-free time she managed to give herself. "Do you have selective hearing?" she snapped at him. "Have I said the words, 'No, I won't do that'?"
She had been trying not to lose it, but it was too much for her. "Asking for the shower was so I could train on my own because I can't do it with someone standing over me and pushing. That's all anyone ever does; they push and push and push. Sam just pushed and pushed to point where I'd rather be tortured and kill than stay here! And you are doing the same thing. Just pushing and pushing."
Abby buried her head in hands. She was supposed to be getting better, but instead of giving her the time and space she needed they just kept on pushing. "Just...I don't matter, so just do whatever you're going to do anyways." She gave up; her life was completely meaningless and nothing was ever going to change.