Hi and welcome! Great to see that Isadora got in the game. :) I'm Chantal and we've already talked, but I didn't get to introduce all my characters so let's do that now:
Priscilla is her aunt and we've already discussed them.
Rosalind Rookwood, née Jugson, is a distant cousin (sorry, I can't figure out all those how-many-times-removed, lol). She's an Auror and a DE, and very recently (August 1st) married Augustus Rookwood. As an Auror, she can't publicly appear to approve of what her father and brother did (though she of course does, being a DE, lol), but maybe they could still be friendly, Isadora and her? Her best friend is Betty Burke, and she's good friend with Narcissa too (Andromeda was her bff until her scandalous marriage).
Stu Podmore is a half-blood Order member, so no chance she'd talk to him, lol
Doris Crockford is a muggleborn WWN news anchor and there again, no chance that Isadora would give her the time of day. ;)