pls. help and suggest??

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my daughter is almost 2 and half but she is not talking i mean conversing. she loves songs and since last month she is singing part of two songs,catching tune almost perfectly few words are also she is picking . apparently she belives in non verbal communication and will take u what she wants like she will bring glass or a bottle for water she get her things done . sometimes it feels like she is picking few words,she is healthy never been seriously sick,accept speech acieved all her milestone on time or even lil before,sat on her own in 5th month,walked in 9th month,very active,cheerful child. i also spoke late at 3,is it normal?i've visited docs and they think she is normal pls suggest sometimes this eats me.