Domineering Personality!

I am 34, and unfourtunatly I have a Grandmother who has serious control issues, issues that are driving me over the deep end. Almost every single time I am in her presence she says something that is either contraversial, controlling, manipulative or insulting, nothing ever seems to be good enough! Whenever she is in the company of other family members or friends; and I mean "every time" she just has to control the situation, meaning either the topic at hand, what and how others are saying what they are saying or even eating during a meal. This women who has a son who happens to be my uncle is 59 years old and still lives in his Parent's home, and it is obvious to the rest of the family as to why, because she was able to implement total control over him at a young age, he has never been on a date, never a girlfriend and will without doubt spend the rest of his life a lonely man living in his Parent's basement, and all due to his mother's domineering personality. Now granted she is in her late eighties but as long as I have known her she has always been the same. Frankly I do not know what to do...for years I have tried to speak to her one on one concerning specifically her insults directed at me, but she has never been open to constructive feedback. To top off all this nonsence; she passes herself off as an upright infallible Christian who has all the answers when she obviously lacks scriptural knowledge. Now I don't want to say I "hate her", but I definitely hate her behaviors, false pride, superiority, inferiority; whichever I don't know! Victim-stance and so on. I really could use some helpfull advice...