That's an interesting comment which could be read into in several ways. How supportive and accepting is she of your "mental disorder" and treatment in general? Is the recent stressful situation something that is causing her stress? Does she really just want to talk about it? Are you overmedicating to the point of being "zoned out" to significant levels of "normal" stress? Do you adjust meds when you lose your job, get promoted, someone dies, gets married, is born, forget to pay your electricity bill?

Context is important.