Luna teasing her partner (whoever it is; she has one per alternate universe [for example, Kaze is main, Damien after that, then Ocamel, then Nosferatu, then Demitri "Drac" who's Vlad's grandfather, then Vlad, then Abraham, then Cedric] yes her grandfather falls in that list because its not uncommon for vampires and lycans to instinctively inbreed to keep the bloodlines pure but its an old tradition that isn't done in her time)