Ezmeralda met Shrok'lakelev as they entered her room in The Forsaken Chambers, they removed her from the spike on the wall and let her know she's dead. Ezmeralda didn't understand what they mean, because she felt fine.
Cora asked Ezmeralda for some coco powder which she had on her, Cora used the powder and some milk from Radahn's Alchemy Jug to make some cold coco, she gave it to Ezmeralda to drink and the two became good friends.
After some talking Ezmeralda revealed that her daughter was taken from her, the group promised to find and return her daughter.