She can have a conversation of about 5 sentances from each person in the conversation. She started conversations at about 13 months. She knows all her colors, shapes, counts to 10, names of all her friends and dolls, we're currently getting the alphabet down, she still skips a few letters. My point is this, even if a child is slow or lagging in some areas of development, like Hanna was in walking or not even crawling, they make up for it in others. Don't let anyone , including me, trap you into a competition of development.
All children develop differently.
My 3 brothers and I all developed at different rates, but it didn't mean that my parents loved us any less. The main thing is to be there for your child unconditionally and love them in all things. Don't push them if they are not ready to move on. One of my brothers had a genius IQ, but was not ready to move into kindergarten at the prescribed time because he didn't want to leave mom. They all eventually catch up.