There must be an interesting backstory here. Did her parents deliberately not name her? Did they forget?
My mother started filling out her own paperwork around elementary school because my grandmother created so many problems that school staff would simply give up.
My mom told me about a time they had someone with that situation at work, and people would call the person FNU until they were corrected.
https://www.kalzumeus.com/2010/06/17/falsehoods-programmers-...