Alois is the daughter of Baas Cogez, a wealthy landowner and businessman in their 19th-century Flemish village near Antwerp. Her family's affluent status, rooted in her father's rise from poverty, creates a "Nouveau Riche" household enforcing rigid social standards. Despite her privileged upbringing, Alois embodies a "Spoiled Sweet" nature, maintaining cheerful friendliness and indifference to class distinctions in her interactions.

Her deepest bond is with Nello, a poor orphan boy working as a milk seller. She treasures his artistic talent, frequently requesting drawings and admiring his kindness. Their connection evolves into mutual affection, marked by scenes where Nello’s perspective brightens at her presence, reflecting a "Crush Filter" effect. This friendship faces fierce opposition from her father, who condemns Nello’s poverty. One pivotal moment shows Baas Cogez discovering their association and erupting in rage, leaving both children tearful and distraught.

Alois confronts emotional trials tied to this relationship. During a birthday celebration, she sinks into profound sadness when Nello cannot attend. Her father’s attempts to control her social circle include sending her to boarding school, intensifying her stress. While not openly rebellious, she displays quiet loyalty toward Nello, defending his character against her father’s accusations. Her appearance features historical Flemish influences, including dark brown curly hair—an "Adaptation Dye-Job" altering her original blonde depiction—and frequent blue attire.