"I wasn't planning on it. If this is in fact what's going to happen - which I suppose is the case, although I don't recall any advance warning - then it's going to happen whether we do anything to stop it or not." Aradia actually isn't particularly bothered about secrecy for her future life, so if Vriska wants to look at the brochure, she'd hand it over easily enough.

"...Rather, anything we do will likely only help it along." She's just assuming paradox space still has a say here, and that is just How It Works.

Run around in time perpetuating eventualities long enough and you get used to that line of thought.