I am a parent of a 3 year old. My child had a rough start, she was born early and was hospitalized for about 5 months with major complications including malignant sleep apnea, difficulty feeding, PDA ligation, IVH III (no shunt at this time), and a cerebellar stroke.... She, does not talk although she occasionally says mama and has said da, ba, no, and yes before. She has picked up sign language quite well, but her lack of expressive language is a concern. We are also, concerned because we have not been able to break her thumb sucking habit...