C2 Xilonen or C0 Nicole?

I currently have a Klee(C2)-Emilie-Durin-Xilonen(C1). I was planning on getting Xilonen C2 next rerun but with Nicole around the corner, I was wondering if she would be an upgrade to C1 Xilonen - I don’t want to get both since I would like to save primos. I don’t like the idea of having no healer but there are times that Klee would benefit from no interruption.