Comparative analysis of the proper motions and distances of the identified pairs. Top: ∆PA vs µ ratio diagram, where the dashed grey lines set the upper limits of our criteria for physical association (Eqs. (2) and (3)). The red open circles are pairs that do not comply, or do so partially, with those criteria, respectively. Bottom: comparison of distances of the companions (denoted ‘B+’) and their corresponding primaries (‘A’). The amber circles are pairs that do not comply with our criterion (Eq. (1)). Our Carmencita M dwarf may be the primary (i.e. the most massive) or a companion in the system.