I dont think you should leave her overnight if you dont need/want to just for the sake of it if you don't feel comfertable. If its working for you then why push it? I did leave my girls overnight form about 5 months but only with my mum to start with, oh and DH when I was working nights but that doesnt really count as he is their paretn too

Are you planning on leaving your DD with someone when you are in labour? Is your Dh staying in with you after bubs is born? My DH didnt stay after the girls were born apart from when DD3 was born as it was midnight and we were going home in the morning there was no point going home when the girls were already asleep at my Mums.