Is my 68-year-old mom’s sudden hallucinating a sign of early dementia?

1) she said she saw her deceased second husband sitting in a rocking chair on the front porch this morning.

2) Later during the day, she saw a Coyote by the chicken coop and it got away. She claimed to me that the Coyote was "Moya" (one of her pig customers) and that he was come back from deportation to steal her chickens of all things. WTF?

This is all of a sudden out of the blue, like she suddenly lost her mind today and started talking irrationally about things.

I don't know what to do about this, but I have to tell my brother and sister for starters, because this is crazy. I'm already losing my own mind, and I'm in no condition to care for another adult who may be having dementia. She's only 68 years old. I'm 45 and medically disabled.

Is my 68-year-old mom’s sudden hallucinating a sign of early dementia?
Post Opinion