Ivy has a built in short range teleporter which she uses to compensate for her somewhat glitchy navigational systems. When stuck, or too far away from the player, she will engage her teleporter to teleport closer to the player. 

Ivy will only use her teleporter when the player has a weapon equiped. She will teleport to players even when asked to 'stay'. To prevent this behavior, either disable the functionality, or lower your weapon.

This function can be disabled or enabled through the NX-2C Controler Holotape.

When in close vicinity to factions that are both friendly to the player and also unsympathetic to Synthetic life, Ivy will sometimes automatically disable both her Teleporter and her HyperCombat routines. 

In this way, she can protect her identity as Synth from these factions, who would certainly try to kill her if they found out what she was.

Players will be informed by a message popup if this occurs.
Ivy can spot these factions even if they are not in her line of sight, due to her interal scanners.