I would take this opportunity to help her gain familiarity with her body functions, but not start full-out training yet. Disposable diapers are so good at their job that a lot of kids don't have much awareness of when they are going, which makes potty training happen later and with more difficulty. What we did is point out to our son when he was going- saying "you're going poop/pee" and putting him on the potty if it was obvious he was trying to poop. (It was also sometimes made it easier for him to poop seated on a little potty.) If she tells you that she has gone, change her right away so she is used to not having it against her. We fully trained at 20 months because he was showing signs of readiness, and because diaper changes were a struggle. It was a lot of work for a few weeks but now six months later he's totally trained, and has been for a while. I think in some ways it's easier earlier, before the full toddler stubbornness and defiance hit.