Zelda gave her brother an annoyed huff as he toyed with her hair. She knew that Sheik often hid information from her and the princess didn't like it. Zelda wanted to raise her hand in protest and request that she be present when he delivered the news to father, but she knew that her brother thought he was protecting her by not telling her whatever it is that he had learned. There was that, and the fact she and her brother were still situated in a crowded bar where she could easily give herself away with that kind discussion. As the holder of the Triforce of Wisdom, she felt like she needed to know whatever it was that had been putting her at unease. 

Even if it meant going in behind her brother's back.

"We should return home. Impa probably already knows where we are." Zelda said with a playful smile, "That woman always seems to find us out." 
Zelda walked out of the bar as boldly as she walked in, not paying particular mind if her brother was following her or not. Behind the surface she was trying to figure out how she could eaves drop on their meeting without being caught. Zelda couldn't hide outside of her father's door, that would be obvious. She mulled over the problem as she ducked into a hidden corner where the secret entrance they had used earlier was hidden. She approached the entrance, somewhat apprehensive about things happening in castle town. Zelda felt like there were forces out there out of her control, and the more she waited the more powerful these feelings became. 

Was she in over her head?