The left half (hemisphere) of the brain controls the activities of the right side of the body.
Peyton obviously had stroke over the night which might either be ischemic stroke (occurs when a blood clot keeps blood from flowing to your brain) or haemoragic stroke (results when a blood vessel in your brain ruptures or breaks, spilling blood into the surrounding tissues) which affected the right side if her body, a left-brain stroke made her weak and not able to move the right side of her body. Other effects from the stroke may include; trouble speaking or understanding words said or written.
The stroke might have affected the following areas of her brain,brain stem, cerebrum, cerebellum,limbic system.all these structures are
located at the base of the brain, the brain stem maintains basic life-supporting functions such as breathing, heart rate, blood pressure, and digestion. When a major stroke occurs in this part of the brain,the outcome is usually fatal.