Anybody know where Elisa is? And how do I use Ley -Infused Sand to locate her?
If you go to a Crystal Desert map with the sand in your inventory and double click it you'll get a message telling you if she's in that map or a different one.
Honestly though, I just go for the easy route which is to look at the Wiki page, which shows her location: https://wiki.guildwars2.com/wiki/Priory_Historian_Elisa
Danielle Aurorel, Desolation EU. Mini Collector
"You can run like a river, Till you end up in the sea
And you run till night is black, And keep on going in your dreams
And you know all the long while, It's the journey that you seek
It's the miles of moving forward, With the wind beneath your wings"