Eroria didn't bite it for two reasons.
1) She was opposed to going in after the Troll the first time, so hung near the back and ran away with the mud dwarf almost immediately after the fight started.
2) I got busy, so had to leave the game for a time, so she wasn't with the party when they met their bitter end (those that survived the first Troll fight, that is).
But in a later game, Ilka died mightily. I've found that while bad dice can cause a death in one of Northman's games, the most frequent cause seems to be poor tactical planning on the part of one or more PCs. The fights are often so close to the wire that one bad decision can have a large cost. But we've also handled lots of fights that have seemed like they'd have too high ECLs for our party level. It's fun that way!