Here's one that has been brought to my attention that I didn't think about and another that occurred to me after getting this suggestion:
- DO know/investigate your org's Legacy Policy as some may have changed over the years since you were an active. AFAIK all consider sisters, mothers and grandmothers, but what about aunts, step-mothers, or step-sisters? (ETA: Exlurker has corrected me stating that Chi O does not consider grandmothers as a legacy relation. The point is check your org's policy!)
- If a PNM is a legacy and her legacy alum (Grandma, Mom) has passed away, DO volunteer to send in the appropriate Legacy form for that PNM.