[Terezi's already got her hands up, like she plans to placate him somehow, when he seems to catch on to what she means. He has her undivided attention for as long as his instructions and warnings continue, filing everything away so that maybe...maybe she can work herself up to this.]

I'll be careful. I just...want to be able to know her better, you know? Not just things I've read about her. I want to make her a little more real.

[And in the process, probably prove his point. It occurs to her that she deviated from their conversation about how he didn't feel like a very inspiring ancestor to...talk about her own.]

...Have you tried asking her? How to be an ancestor? Or asking Meulin?