Please help!...What is wrong with my grandma?

So I use to just talk to my grandma on the phone, and we had a pretty close relationship, and then three months ago, I had to go live with her, due to some issues in my family. Anyway, there are three things about my grandma that really bother me, and I don't know what to do about it, I've talked to her about it but I really can't get through to her. 1. For whatever reason if I ever say i like something, she will all of a sudden like it too, anything I say, she will repeat as if she had said it or thought about it herself, and a lot of the time I feel like i am teaching her things and I am the grandmother, giving wisdom to the young, and she is the granddaughter. 2. She likes to over exaggerate, she will be on the phone and just completely blow stories out of proportion and she will act like the biggest drama queen, and I just feel like she isn't truthful. 3. She goes on these rants out of nowhere, and doesn't let me speak. And she gets off on being in control of me and will smile, if she thinks she has control, and every time I talk to her, she says, that's she is the adult and I am the child, so i have nothing to say (I am 17, by the way). And actually, this one lady told her "You know, sometime the young are wiser than the old, try and listen to your granddaughter more." but she never does. Why do you think she does this? what should I do? and what do you think overall?