Portugal has been identified as the European country with the most rapid evolution of Pediatric Palliative Care provision, where approximately 7800 children have life-limiting conditions. This is a highly complex experience not only for the children and their parental caregivers, but also for their healthy siblings and grandparents. The present descriptive-exploratory study seeks to contribute to the understanding of the psychological experience of life-limiting conditions in grandparents. A total of 19 families, consisting of 15 grandmothers and 4 grandfathers, completed a sociodemographic and clinical data sheet and a semi-structured interview was conducted in which they shared their testimony. The results of the thematic analysis highlighted an integrated view on 10 important dimensions in the grandparental experience and promoted creative responses by means of their own perspective. However, it has some limitations, such as the small sample size and the data collection procedure via telephone. The results contribute to the design of specific intervention methodologies in an ecosystemic approach and suggest further research to explore more protective factors and communication with health professionals. For psychological intervention, it is suggested considering the identification of individual and family resources that contribute to the activation of key processes in resilience and posttraumatic growth.