I believe Galllia might create a puppet Bretonian Republic/Kingdom. You know, Vichy Bretonia or something like that. Why? Well, there must be people tired of all the war between Gallia and Bretonia.
From my point of view, if I were Gallia, I would make this movement: help Mollys, because they have their own pilots - just give them some toys and babble about supporting their freedom, with no real GRN presence in Dublin. And later possible trade between new Dublin Republic and Kingdom of Gallia, after Bretonian influence in Dublin came to zero. That worked with Banana Republics IRL.