Hello, I can understand your concern. You are not wrong in your concern regarding the cleft palate and club foot being a part of a syndrome associated with mental or psychological problem. It is very difficult to assess online or ask you to assess her condition and find out the syndrome. As she is not reaching the milestones of sitting by herself or speaking a few small words, there does seem to be a need of a consultation by a pediatrician. Thus, I would recommend you to take your sister s daughter to a pediatrician for full physical and mental assessment and finding out all the symptoms associated with syndrome and the syndrome itself. I hope this information helps you. Thank you for choosing HCM. Take care. Best, Dr. Viraj Shah