It gets better. How old is she? My son was like that for about the first month. Establish the difference between day and night. During the day try to keep her up for longer periods of time, Simulate her, have the lights on, don't stop daily activities if she does take a nap. Then at night... Keep the lights off, be calm, quiet voices. Babies really pick up on it. It saved my life. I went from sleeping a few hours to sleeping almost the whole night. He only wakes up for one feeding during the night and sometimes not even that!!!
She could be uncomfortable where she sleeps. My daughter has to have a light on to sleep and we had to put a blanket on over her mattress to make it softer
Try bathing her right before bed time give her a good feeding and a nice tight swaddle maybe reading her a story so she falls asleep to your voice it worked with my little cousin when she was a baby she was also fairly fussy