She can't stop him, so she can at least be there for him. All the time, whenever he needs her. ... It's not like she's planning on leaving him any time soon. With a bleeding heart like his and Nanako's somebody has to exist to settle them.

Her time stop isn't active right now. But the base power of knowing where the ayakashi are doesn't stop. She's agitated as they get closer to their target.

There are more ayakashi the closer we get.