[Toriel nods. This is, honestly, one of the more sensible things she's ever heard.]

I completely agree. I just... do not wish to bring up all the unpleasant things and poor choices that I and others have been involved in. It is just... depressing, and usually not anybody's business anyway, and may even in fact be someone else's business, not my own, and not something that I should be the one making the decision to talk about.

Whatever your secrets and memories are, you are more than entitled to keep them to yourself, so long as nobody is being harmed.