Personaly i wish we can offer them one of our ressurection scrolls.

Or cast it directly ... i mean ressurecting dead is no strange thing in this world, apparently some (looking at you Gale) people are even counting with such magic lorewise, so we can hardly blame it on "just game system", right?
So ... both for Kanon and Arabella (or Kagha, Halsin ... hells, the list is quite long

), imho we certainly should have option to offer our help.
I wish you could at least offer casting speak with dead to that Yellow Woman tiefling, who rush towards prison then to shoot Sazza. (dont remember her name)
At least so she can say Farewell. :-/
Simmilar to
when you cast it on Miri in that Burning inn, while her husband is present ... quite awesome scene must say, i didnt expect him to react. ^_^