R.B.
My daughter is 18 months and has Down syndrome, and while she's been sitting up for nearly a year, she still is not walking. It's wonderful that you're getting the physical therapy--it sounds like you're totally on the right path. But be patient. She'll do things in her own time, when she's strong enough and when she's ready. But rest assured, she will do it! Feel free to contact me any time if you have any questions or if you just want to chat!