Does Black Floater Line In Eye Heal By Itself?

Yes, thank you. My Adult daughter got hit in the eye with a soccer ball yesterday. She said it hurt and her vision was blurry but then it cleared. Now she said it s blury some time and she sees a black line sometime (sounds like a floater to me, which she never had before) Will this heal or should she go to the emergency room or try to find an opthamologist. They recently moved out of state and she does not have any doctors in the new area yet. Thanks for your help.