Karis is what my dad wanted to name my sister. (~Xaquis in Greek). I really love Carys, but not Karis. K names have a trashy feeling to them sometimes. (Kathleen, Katherine, Karen are legit; Kameron, Kacey, etc aren't)
Is the spelling a bit trashy? It would be a middle name with a cool story (I like those), but I was curious as to recommendations.
Carys is out, though: It's Welsh, not Greek, and has a completely different meaning. I don't like people altering names to honor someone. (Like someone coming up with a variation that honors six people with a name that isn't even that close.)