my grandmother has been talking to herself for the past two years already
she cant hear very well so i have to speak loud and she gets angry at me
she is almost 90 years old now
she is still very healthy examples would be her working in her graden and mowing the law
she has very bad mood swings
and she tends to talk about people out loud
when i asked her why was she talking about everyone
she just denied it
when i walked away she started saying horrible things agian
she keeps talking about other peoples money
she wears many layers of clothing when it is hot

and when it is cold she wears very little
she forgets things easily
she aruges with me over and over again
and when she doesnt argue she just keeps talking crap about me
could this be a sign that there is a problem?