Aphrodite and Amelia might've rubbed shoulders at a few events? And technically Amelia is Ares' grand-daughter but that connection is so flimsy I don't know that it would mean much to Aphrodite. Ganymedes really likes her I think, she's probably one of the gods he'd feel most comfortable around? Plus he's mentioned as being in the company of Eros and Anteros a lot, so there's that too.
Kelly! Well obviously she and Quinn hate on each other. I think the fact that Kelly's rich probably ticks another box on Quinn's hate list, since she's from a very blue collar family. I can see a lot of bickering in their future anyway :D Amelia cares a lot about those kids and has to refrain from acting too motherly towards them (since they aren't actually hers in this life). I think she's probably torn between scolding Kelly for being so mean and like applauding her witty put downs, lol. Motherly pride or something, idk. Rest assured she's always on Kelly's side anyway :D