"How are we going to find the stuff we need if Nick is not here?" Iris asked Tyler as soon as they settled into their inn in a small town at the East border of Koslov.
Earlier on, Tyler teleported everyone into the town as if it was a walk in the park for him - though Iris was highly against it.
They knew the areas surrounding Koslov like the back of his hand, and if he had to avoid drawing attention to themselves by firing guns or using his powers, the best option was to enter the walls of Koslov. He did just that, bringing everyone to safety. Meanwhile, even after taking a bath, Iris was still jittery. She couldn't understand how they could find the witch's altar without Nicholas' help.
The altar was the most important thing for them to destroy. Once it was done, nothing else was going to reinforce Minerva, and Iris and her people would have succeeded in taking out such a ticking time bomb. Time was indeed of the essence, causing Iris' to be restless.