Wow well 3-handed poker and to get AA is a gift. And to see them raise and re-raise before you is a great situation. You want to pinch as many chips as you can out of them. I could only judge what to do if i knew your stack/their stacks and blinds. If the blinds are low and they min raise the best thing to do would just be to re-pop it up a considerable amount (you dont wanna push all in with the risk of only getting a few chips). If the blinds are high and no matter what your stack size I believe its best to push all in; in that other situation.