In Mauritania, many learners struggle with French, one of the official languages of instruction at school. This language barrier hinders student progress with the curriculum, increasing the chances of leaving school. This risk disproportionately affects adolescent girls due to discriminatory social norms undermining their continued education, even in urban areas of the capital, Nouakchott. To address these challenges, UNICEF Mauritania, in collaboration with the Akelius Foundation and national partners, has initiated a blended course to improve French proficiency for girls in a disadvantaged neighbourhood of Nouakchott. The blended course, which takes place at a community-based facility during afternoons, integrates regular teaching with the offline use of the Akelius Digital Learning app. This research brief presents evidence on how the blended course supported vulnerable girls' learning and other socio-emotional skills. It highlights lessons learnt for practitioners in implementing digital learning in resource-constrained environments, including the reliance on offline solutions and the co-design of digital content with the teachers.