Yes, I knew them, although I did not know their name until very recently. I attempted to raise them as my own child, for a short time. [She frowns.] To protect them from you.

You do not remember? Before that flower attacked us all, you were going to kill them. I saved them from your attack, and that is when we had a... talk. About you, Asgore. About your cowardice. About your meekness.

Or is this more of... what did you call it... "people coming from the same time, yet different years"? Are you from before that flower appeared, and you only know Frisk by coincidence?