Children facing adversity are at greater risk of experiencing language difficulties than their peers. This study aims to examine the association between specific maternal responsive behaviours at 24 months and language outcomes at the age of 5 years in a cohort of mothers and children facing adversity. Mother-child dyads (n = 138) facing adversity were observed and videoed at home at 24 months in mother-child free play. Four maternal responsive behaviours were coded from these videos: imitations, responsive questions, labels, and expansions. Child language was assessed using the CELF-4 at the age of 5 years. Linear regression was used to examine associations, in both adjusted and unadjusted models. In unadjusted models, imitations, responsive questions, and labels predicted better child language scores at age 5. Imitations continued to positively predict language scores after adjusting for confounding factors, including earlier communication skills. Findings demonstrate the importance of considering maternal responsive behaviours with respect to stages of child development.