The Weasleys' Slave?

Voldemort has won the war, and has started forcing purebloods to join him as Death Eaters and own at least one slave, while forcing Muggle-borns to become slaves to purebloods. After arguing with his mother, saying they aren't worth more than Muggle-borns and shouldn't have a slave, Fred Weasley goes to buy a slave and is surprised when he sees a certain brunette. Fremione