A few things in particular, if we're being honest.

[Lust leans back against the doorframe, holding the shirt against herself with her arms crossed.]

All in all, a number of things indicate I...am more bothered by things from our old life than I care to admit. Even to myself.

[Something she thinks, perhaps, Envy understands all too well. And she keeps the focus on herself, presenting it as her problem. Which it is, she's hardly putting on some front for her brother's sake. She's just not foolish enough to flat out address whatever may be bothering him.]