you will see a broken pillar next to it go up the stairs and jump on the pillar then jump on the roof and run around youll find her. you might need to come back later. good luck

yeah I tried that but it didn't work its to hard to jump on that pillar, every time I jump on the pillar I just fall off I keep trying to jump on but I just can't stay once I jump. and what roof the one on top of you when you go up the stairs ? is there some kind of trick to it if there is please tell me