(Soulmate/Coven au) Sirius and Remus takes Fem!harry (Cassiopeia/Cassandra?) and maybe Neville after James and Lilly's death to San Francisco before Patty Halliwell's death (same age as piper or phoebe) they become neighbors when they meet they find out Fem!harry is soulmates with one of the girls(the adults are very carful to not cause codependent behavior w/mate bond) and because of this the girls grow up with there magic and Paige cause instead of putting Paige up for adoption Sirius and Remus adopt her. Fem!harry could be a Wicca/foci user hybrid maybe so grams has a reason to teach them if Patty passes away or it could be dangerous for the mates cause Fem!harry's magic is unstable for some reason cue Hogwarts or Ilvermorny/(nevermore more crossover potential) letters if Ilvermorny is done they could have a Wicca course so the girls could go 2 or they have laws about mates being together? I'm kind of curious how would everyone handle Fem!harry if she ends up like Cassandra Dimitrescu or Wednesday Addams either way overprotective Fem!harry for the sisters once the prophecy of the Charmed ones come into play (could go into the show Charmed then w/Cass as Andy's partner on the police force/special magic division)