Once Booth was seated, Christine crawled into his lap with his assistance and settled against him. She grinned at her mother.
"I am four!" she proclaimed proudly, but held up five fingers. Normally her father would curl a finger down to show four, it really was a ritual. Instinct must have kicked in, because that's exactly what Booth did till only four fingers were showing.
"And the year?" Booth asked.
Christine thought a moment, her face scrunched up. "I's was born in 2010... 10 plus 4 is 14... so 2014!"