She is saying there are cameras all around the house watching her every move, and speakers talking to her, she said only she can hear the speakers
She said the voices from the speakers are my sister and my mom, both of which are still living. I even tried shower her everything around the house and she states that the cameras are invisible. I tried asking what direction they come from and she said they were all over.
This all started happening after my husband left to California for 3 weeks for work traveling, and after my son made a joke about cameras to his sister. She denies she is wrong and she said she don't have evidence but she said she "knows its there".
Please help, thanks.
Your MIL is pretty young, but with dementia, anything is possible. Make sure no one argues with her. It does no good and you won’t convince her of anything.
In any event, she needs to be evaluated right away if this is a sudden change in mental status.