My daughter just turned 3 and she is still not able to communicate clearly. She uses 2 words but cannot form sentence. We speak tamil and English at home. With her friends in hindi. We tried speaking all the languages but I still don't see any improvement in her speech. It's been same for last 6 months. She is been going to preschool for last 1 year. She understands us perfectly and is very social. She responds to everyone. She talks a lot but in her 'own language' which we cannot understand