First, if you have ongoing concerns about developmental delays, then I would suggest that you take those to your pediatrician, who can make referrals to Early Intervention, should that be warranted, or reassure you, should that be more appropriate.
Second, the range of normal is very wide, especially for language development in children growing up in dual/multiple language learner environments. In terms of language cognition, I would be less concerned about expressive language, and focus more on receptive language (comprehension). It is well established that typical dual language learners have later early language milestones, but more than make up for it by school age.
Third, everyone's first parenting experience is unique. For some, the intensely child-focused nature of this first experience may mean that the child has less functional need/incentive for communicative or problem-solving behaviors at the beginning, because so much of the environment anticipates or is instantly responsive to her needs. So it may be that there are tasks she doesn't attempt because she knows that her needs will be met without her doing anything.
