Hi, A.. Well, my son fell hard two times, and had a heavy thing fall on his head, before he was a year old. I took him to the hospital, got him checked out and x-rayed each time, and he was fine. I told my pediatrician about these things, and he told me that unless the child shows signs of damage at the time such as a skull fracture, other broken bones, loss of movement, and so forth, then the child will be fine. Nothing permanently bad has happenned unless there are signs such as these. So as long as she was checked out thoroughly, and the doctors stated she had no damage to her brain or other parts, there won't be any long-term consequences.
Now...about the bed situation...make sure everyone knows that at no time should a baby be left alone on a bed, a couch, a chair, or any other piece of furniture that is above the floor. They love to roll, and they can throw themselves off of things soooooo easily. It's so much better to prevent a possible accident than to worry about it afterward!
Be at peace and enjoy your beautiful granddaughter.
Peace,
Syl