My daughter is 1 year 8 months old. She has achieved all the milestones in proper time except speech. She is able to respond to the call and play with the educational toys. Sometimes she will imitate what we say. Rarely, she will utter a few words. Most of the time she will be making gibberish sounds. She is more actively involved in running around, climbing the furniture. She always likes to go outside of the house to roam around. Is it normal? What should we do to make her speak?