Questions in The Mental Health Forum are currently being answered by Roger L. Gould, M.D., affiliated with U.C.L.A., and author of the Mastering Stress and Depression program.
Some children develop faster than other children and some a little bit slower.
You mention that she has difficulty understanding spoken language, I wonder if she has any hearing problems, if she does this needs to be addressed. Like pointing to milk or toys. I would recommend working closely with her pediatrician to rule out any physical causes of her problem and address it as early as possible to prevent any bad outcome of her development. Information contained within this forum is intended solely for general educational purposes and is not intended nor implied to be a substitute for professional medical advice relative to your specific medical condition or question. Only your physician can provide specific diagnoses and therapies.