Can you give me some medical advice regarding my grandmother?

It is very likely that she suffers from the early stages of dementia.. they take different forms with people and what she says is not against you.. if she suffers from dementia then her brain cells are slowly dying.. and that changes her entire personality... if she acts so much differently from before without a reason .. either she suffered a minor stroke or she suffers most likely from dementia.. She needs to see a doctor and have EEC and other tests done to determine that.. she is not evil.. there is a medical reason for her behaviour...