Bluetits

 Hi everyone. We have had bluetits building the nest for over a month. And one of them sleeping in the box every night too. But for the past 2 days no sign of her. What I assume is the male who hasDisappointedlways hovers outside whilst she’s built the nest has appeared near by but not gone to the box and not stayed around very long. Does this mean the nest has been abandoned or is this something that Disappointedn happen with the nest building stopping. ? The nest does look quite full and finished as we have a camera in there. Gutted. Disappointed is there a chance she will return after being missing for 2 nights. ?