If you have had a scan of your brain and black shadows are showing in the scan what could be wrong with this person.  She has lost ability to walk, speech affected very low speaking and most of the time with no sense can be made of what she is talking about.
I read your question carefully, and I understand your concern. When it comes to low density (black) area in the brain the first diagnosis whicChatDoctores to mind would be stroked. However, it is hard to judge from that info, location of those areas is necessary, manner of onset and evolution in time, age and other medical issues. Even if we were to admit that it was a stroke there are different type of strokes depending on the origin and blood vessels involved. So I am afraid more information is needed for any recommendation. I remain at your disposal for other questions.