The prognosis following a stroke is related to the severity of the stroke and how much of the brain has been damaged.
Also, there is period following a stroke when the incidence of new stroke attacks are possible.
Your mother's symptoms are characteristic for interruption of front brain circulation that comes from carotid arteries (motor, activity, sensation, thought, speech, and emotion are affected)
Generally, stroke can cause five types of disabilities: paralysis or problems controlling movement; sensory disturbances including pain; problems using or understanding language; problems with thinking and memory; and emotional disturbances.
These disabilities can be overcome if the rehabilitation program is performed, beginning within 24 to 48 hours after a stroke, and may last for months and even years.

Best wishes!
Marija