My mother-in-law has some dementia and recently says she doesnt know who I am. She remembers everyone else. I am her caregiver, and I am with her everyday. She got mad today and told me to get out, this was her son's house, and I am not going to boss her around. Told the emt's she has no idea who I was, but remebered everything and everyone else. Is this normal or is it faking??