my mom is 87, i was at her home Sat, she was fine, went today, my oldest brother stays with my mom, she was in her bed, when she was speaking to me, she was saying things like, Mary Ann, please don't let that fish eat the pig, she saw my brother, he had a plastic bag in his hand, she says, I really like that clock, among other crazy talk, he said for the last day 1/2 she has been sleeping a lot, and saying how tired she is, what would cause somebody to be very tired and talk out of their head? The only thing, my mom has a mild case of dementia, other than that she is in fair health, she knew my and my brothers name, she also told me when she was born, and she knew who the president was. Please help, i am very concerned.