There's no known differences in Sharlayan naming conventions; you're right, Krile has a different naming scheme from other lalafel because she was adopted.

Interestingly, this is a little more obvious in Japanese. Maybe the entire reason Krile is a lalafel is because in Japanese, her name is Kururu. The name of this character originally from Final Fantasy V, by sheer coincidence, is a completely lore-accurate lalafel first name.