You will need to decide which you want to encourage her to use as part of her self-comforting pattern. A vital task for new parents is to learn to identify the different cries of the newborn. Any cry on her part is interpreted as a call for help. Parents automatically feel that they must respond and must find the problem that is making the baby cry. This will take time.
All babies cry.
Sometimes this crying is a fussy period at the end of the day. The baby is still trying to organize all the stimulation he is receiving each and every day. Crying is your baby's way of adjusting to this new world. It is one of your baby's normal six states of consciousness. Crying is not a sign of failure.