People with Down syndrome are unique, individuals. Just like you and I are different, Hailey is different from her friends. She might share some common characteristics and struggles, but she is an individual with her own opinions, her own dreams, and her own personality. Some struggle with gross motor issues, some struggle with speech, some have heart complications, some have vision issues, etc. Not every child has all of the "textbook" issues that can come with the extra chromosome.
Never underestimate an individual with Down syndrome. My daughter has proved me wrong at every turn. I underestimated her from the start and it was a huge mistake on my part. I am certain there are very few things that my little girl will not be able to accomplish if she sets her mind to it.
This is my daughter's latest "skill"...climbing on the kitchen table and yelling "mom" (to make sure I am aware that she is doing it!)