Aa week old it is normal... in your belly babies sleep during the day and are awake at night... so they continue that routine when they are born. Just try and keep her awake more during the day to get her more tired to sleep at night... and if that doesnt work in a month or two hopefully it will change... my baby boy has always slept all night... he is lazy like both of his parents lol so sorry I dont know what you are going through