Highborne - Eldre'thalas

Hello! I’m looking strictly for Lore for a character I am creating that is a Highborne Mage.

She was born in Eldre’thalas, and I’m trying specifically get her age down but through all the things I’ve read I can’t seem to pinpoint when the Genocide by the Prince in Dire Maul happened. How long ago did it begin? How long did it last? Would Highborne have been able to flee from Eldre’thalas, where would they have gone?

From what I’ve read Immol’thar was caged 7,300 years BDP. And the Genocide began 1,200 BDP.

And that most Highborne fled into Feralas hiding amongst trees and caves while Ogres flooded into Dire Maul.