Your Scent. Your baby may be struggling to sleep alone because she wants to be with you. Try tricking her by placing something with your scent on into the basket/crib with her. For example I was using muslin cloths to prop my boobs up when breast feeding, these went into the Moses Basket with Aria when we wanted her to sleep.
Smaller Sleeping Area. Your baby has been tucked up inside you for nine months, expecting them to come out and sleep in a spacious Moses Basket straight away is actually quite a big ask. We were lucky enough to have the carry cot attachment for our pushchair which is a lot smaller than the Moses Basket, Aria slept in this a lot happier for the first few weeks of her life, we have only recently moved her into her Moses Basket. If you don't have a smaller option on hand simply make where she is sleeping seem smaller. Swaddle your baby and also pad out the Moses Basket with towels/sheets, also, cover the mattress with a fleecy blanket for extra comfort.
Ewan The Dream Sheep/White Noise. Ewan definitely helped Aria sleep, we still use him now, when she is particularly alert after a sleep the music setting seems to make her dose off. When she was first born we used the white noise setting which also features sounds of the womb. If you don't want to splash out for Ewan there are white noise apps available though I have no idea how well these work.
Recline The Mattress. Pop a few old sheets under the top of the mattress so that their head is slightly reclined. The cribs in hospitals tend to be reclined as it helps the baby sleep.
A Night Light. We were bought this owl night light and it was a great present, as well as being portable and safe for the little one to use their selves when they are a little bigger it isn't too bright and it switches itself off after 20 minutes. Aria tends to cry if the room is in complete darkness, so I simply turn this on and leave it on, she drifts off and then it turns itself off.