Rachel, I'm so sorry you're going through this. My BIL went through this last summer, it was awful! and the same situation happened, the hospital sent him home. Just like your aunt, he didn't remember anything, he didn't even know what day it was or who the president of the United States was. The day after he was acting very weird, my sister took him back to the hospital and checked him in. He was there about 2 weeks and fully recovered. Apparently he was having a reaction to a prescription medicine he was taking and the doctors gave him small dosages of it to stop the seizures. Once that happened he was fine. I hope your aunt recovers soon, it seems very odd she got sent home. Does she have an appt. with the neurologist yet?