I don't know what's so hard to understand about that. Siona's sister was murdered by humans, Siona led the Dalish to Red Crossing. How is that not relevant ?
Because she was going after her brother, and then killed his lover and then procedded to kill other humans.
Where did the sister come into this again?
And I still need a source for that "the Dalish massacred the entire town" thing.
Umm, Red Crossing is something that both the the elves and human ack happened, but simply disagree on the nature of.
I will admit I am using words like butcher and such merely for the dramatics of it.
But events @ Red Crossing are both noted in "The Rise and Fall of the Dales," as told by Sarethia, hahren of the Highever alienage" and "Folklore and History, by Sister Petrine".
You may claims bias of course, so feel free to do so.