There are so many ways to do potty training. Whatever you are comfortable.....but. Both if my children were trained by 18 months. I found this great book with my first and started training when they were six months old. Nothing hard, just fun and short times on the potty. When it came time to really train they understood what was going on. That does not mean though that this way if for everyone, but it is possible to train sooner than what conventional thought says is the right time. You will know when it is right for you and her. It will all be fine wether now or a little later.