Parents of children with severe disabilities have differing attachment-related support needs. An online vignette study with 25 experts, working in academia and/or clinical practice, was conducted to reflect upon the task of matching intervention components to families, based on their attachment strengths and needs. In two online rounds, the experts first completed an inventory of intervention (n = 25) components and second, they prioritised three components for particular families (n = 22). In addition, they reflected upon their argumentations for selecting these intervention components on different levels, either closely or more remotely connected to the children with disabilities themselves. The most common intervention choice across experts was to converse with parents to increase their understanding in the child's behaviours and communication. Experts justified their choices at various levels (child, parent, family unit, broader environment and professional). In that way, the current study provided an overview of the large number of elements that professionals and policy need to take into account when providing tailored intervention trajectories to these families. Systematically reflecting upon parents' attachment-related perceptions, strengths and (support) needs can furthermore stimulate professionals to prioritise their actions. It should, however, be embedded in a broader (diagnostic and contextual) intake procedure.