Usually patients with sedation on board tend to wake up anywhere from few hours to 72 hours after taking the sedation off. However, in the elderly this can be more delayed. Further, the anti-seizure
medications that were given also cause sedation and could be delaying her waking up. However, all this depends on where exactly she has bled and whether there is and bruising of the brain itself. With the initial CT scan
what the doctors meant when they said the bleeding was not as bad as they though must have been that they expected a bigger clot that would have needed surgery. Howver, how much injury
the brain itself would have sustained, only time will tell and follow-up scans can throw some light on it.
Hope this helps.