Cheer up, Manhattan preschool directors are notorious for raising false alarms. And if your child DOES have a developmental lag, you can be grateful to your preschool director. Catching problems early often means they can be overcome, vastly improved, or worked around by getting appropriate intervention.
Need help sorting through your options and finding the best professionals? I'd go straight to Toby Glick at ParentConfidante (646-300-1881). Toby is compassionate and thoughtful, and will save you much time and worry.