ruudilla
Ruudilla is a term that appears to be a misspelling or a less common variation of "Ruud," which is a given name. As a given name, Ruud is of Dutch origin and is typically a short form of names like Rudolf or Ruurd. Rudolf itself derives from the Old German elements "hrod" meaning "fame" and "wulf" meaning "wolf." Therefore, the name Ruud can be interpreted as "famous wolf." The name has a moderate presence in the Netherlands and other Dutch-speaking regions.
It is possible that "ruudilla" is an informal or dialectal variation, perhaps a diminutive or a term