She's usually on the stairs at the right side of the Edelstein map.
#Halt! Spy!
lusty trellis
lusty trellis
Try talking to Jun? https://maplestorywiki.net/w/Quest/(Verne_Mine)_Halt!_Spy!
hybrid umbra
https://maplestorywiki.net/w/Quests/16/Finding_the_Runaway_Girl
Is it possible you're in the middle of this quest and Ulrika is at Streetlight Row Corner Alley? (Would have to be playing Resistance though.)
lusty trellis
What happens when you click the blue "find npc" button at the bottom right?