While we're discussing realisticness, I doubt that Rossiya Imperii's armed forces would rally that quickly ater the death of the ruler of an absolute monarchy, the death of the man who commands trade, military, laws, taxes, everything.
The barbarians under the command of Avalonian generals make their way into Slainte wreaking havoc as they go. Although normally such practices would be condamned by Avalonain generals, since the barbarians have made it their custom to take no prisoners, the political officers have decided it best to give them free reign.
Farms are burned, wells are poisoned, buildings razed. No captives to speak of. Little else to report.
For Slainte to assail Avalonia itself is a foolish move. I've been fortifying my borders almost since day one. The All-Enclosing-Wall was not even penetrated by the legions of Caprica. Any Slaintean soldiers that approach would be hampered by barbarian resistance, as Avalonia has lined their pockets with gold; militant resistance, as my army is great; and hostile terrain, no bare plains up there.