"A-are you sure?" asked Ginny Weasley in surprise as she watched her boyfriend of six months meticulously straighten his pristine robes in front of a large ornate mirror in the Malfoy Manor foyer.
"Yes, of course Ginny. I need to withdraw some money and you're already here so let's just go together," muttered Draco distractedly in response. A pleasantly shocked Ginny warmed at the trust and intimacy Draco's casual decision implied was between them. The only vaults at Gringotts she had ever witnessed were her own, and when she was older; her parents'.
Draco stepped away from the mirror and gently took Ginny's hands in his. A raised eyebrow on the blonde's part questioned whether redhead was ready to apparate. One nod later both figures disappeared from the room with a crack.
oOo
Ginny hung behind Draco as the fierce goblins subjected him to routine security procedures and she held onto his hand tightly as the Gringotts' cart barrelled them through the dark labyrinthine passages.
"Here we are Mr Malfoy", announced their goblin cordially and the couple stepped out of the cart with vaguely shaky knees. Draco nodded at the short creature and withdrew his dragonhide coin purse with an expression that could be described as bored.
The sight that beheld Ginny when the doors to Draco's vault were pushed opened stunned her. Inside the cavernous room lay piles upon piles of galleons - a lake of gold shimmering in soft light. Ginny was utterly dumbstruck with the obscene display of wealth. She was always aware that her lover and her friend was rich – his possessions, dwelling and manner were a testament to that – but before her that day was the cold, hard, golden proof of Draco's fortune.
The goblin's gruff voice announcing he would wait at the entrance of the vault shook Ginny out of her awed reverie.
"Malfoy," Ginny managed to stutter out as Draco gently brushed by her with a smirk tugging at the corner of his lips towards his closest pile of gold. "Did you say this was your everyday transactions account? You have more vaults... than... this?" she trailed off gesturing at the practically innumerable gold coins around her.
"Weasley, of course. Anyone with as much money as my family has needs more than just one vault to effectively manage funds," Draco replied as he indifferently grabbed handfuls of galleons and filled his coin purse to the brim.
Ginny raised an eyebrow at his answer and simply replied with an "uh-huh". She was glad that the days of Draco's cruel taunting of the Weasley's financial situation had lessened greatly – although his words unspoken hung between them: but your family wouldn't know.
Draco straightened up from the pile he was collecting from and the couple were about to exit when a motion in the dark walls of the vault caught Ginny's attention. A little flap had opened and its edges were so seamless that Ginny would not have known it even existed. Small arms carrying a large container of galleons protruded from the hole in the wall and smoothly poured at least fifty times the money that Ginny's parents had into Draco's vault – creating another pile of coins that reached her hips. The goblin arms that just deposited the gold coins retreated smartly with the container and the little door swung back, again revealing a seamless wall. Ginny simply gaped at the new gold twinkling up at her from the ground.
"Draco," she breathed, staring at him wide-eyed. "What was that?" The blonde smirked at Ginny and quickly swooped down to pick up one of the galleons from the fresh pile, flipped it in the air casually and slipped it into his pocket.
"Interest."