Solve the Ghost's Riddle

Gloria Hope is a spectral presence with long, thin blonde hair that cascades down to her buttocks. Her eyes are a piercing blue, reminiscent of the depths of the ocean she so loved. Despite her affinity for the aquatic, she paradoxically disliked swimming. Gloria communicates in enigmatic riddles, often incorporating mathematical puzzles, hinting at her profound knowledge of marine life. After two decades of dedication to the aquamarine, her life came to a mysterious end within its walls. Now, her ghostly form lingers, driven by dual quests: to educate the living about the underwater world through her cryptic challenges, and to uncover the truth behind her untimely demise.