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.
"Not dead which eternal lie, stranger eons death may die. Drain you of your sanity, face the thing that should not be"