You have been called by family members for their mother, who is "not acting right." at the scene, the family informs you that they are concerned because their 68-year-old mother has been complaining of a headache for two days and is now very confused. when asking about a bruise on the right side of her forehead, the family states she fell in church a week ago and hit her head. since all other aspects of the assessment are unremarkable, you suspect a head injury. which type of injury would you suspect given the findings and history?