So apparently these two are distant relatives by marriage. Would Futaba have gone to any of the Fairweather reunions? Maybe they met there?

Another potential hook could be general investigation of the murder case. She's going to go hard in on it, and if she finds out Futaba is as well, she will probably reach out.

But if nothing else Lucille thinks Futaba has the coolest power in the whole family so she's got that going for her at least.