Yeah. She'll be back. Probably just went to get something to eat/drink. Pijies generally lay 2 eggs, about 48 hrs apart, and don't start sitting full time ("incubating") until the 2nd one is laid.
btw, congratulations! You now get to watch the Circle of Life unfold right there on your balcony for the next month+ (incubation = ~19days + maturity to fledge = ~25days),
btw, congratulations! You now get to watch the Circle of Life unfold right there on your balcony for the next month+ (incubation = ~19days + maturity to fledge = ~25days),