Tristan hardly even noticed she was there until she was practically on top of him, and when she excused herself he made to draw his legs up. "Oh - I'm -" But then she was hopping over him, and he clutched the open book against his chest to keep out of her way.
"... Sorry," he finished, when she'd landed safely on the other side. The book fell back to his lap. "No, it's my fault. You can't just splay yourself out in a bookshop, can you ..." He began to push himself to his feet, which was about when he realized he had been sitting in the middle of an aisle reading a picture book about princesses for all the world to see. He snapped it shut and tucked it under his arm, coloring slightly as he bent to start looking through the lower shelf again. "I'm just - looking for something for a student of mine," he said, feeling more than a little silly for trying to justify himself - especially to another adult poking around in the children's section. She looked a bit too young to be buying for one of her own, he thought, but you never knew.