As you know, Rinoa went to the dance to talk to Cid, to hire SeeD.

This imagery is repeated again in Versus 13, granted it was never finished and recycled into FF15.

Stella was replaced by Lunafreya. We could assume that Stella had dogs as well. What I've heard about Versus13's plot is that Stella's brother (Presumably Raven) was breaking into the vault to steal the crystal.