Even if they survived, Raphtalia was unable to discover their locations. Or perhaps she found that they had died afterwards…
If they had fled during the First Wave, there is a possibility that they escaped to Silt Welt or something like that.
Finding them will probably be impossible.
Anyways, I don’t plan to dig very deep into this.
“Now then, I’m sure you have already heard it from Raphtalia, but I will declare it again here.” (Naofumi)