How did this happen to my friend?

I have a good friend, 77, who has a history of strokes and one seizure. Three days ago she was alone in her house with her extremely ill husband. He refuses to go to a nursing home. Anyway, she had a stroke but the crazy thing is she has a big lump on her forehead, a black eye but the back of her head had to have nine staples! The paramedics came, the hospital actually released her to go home! How can you have injuries on both. your face and skull ? She can’t remember much about it.