According to Pixar, they marry another superhero, move to suburbia and make babies, truing to fake it and be normal (what an awful idea, you have to admit!).
Obviously, the world happens to be in peril again, and again, and again... and the family of superheroes has to balance superheroism and family life. That's the outset of The Incredibles (2004, Brad Bird), the movie trying to merge family comedy and superhero movie.
As we concluded in the first installment about superheroines here, it's a tricky genre and feminist perfection does not abound. So this is no Brave (2012) either. But we can still get some out of this:
1. (After some lies and deceit) we finally have a super-couple doing stuff together.
2. Female agency, even if the whole movie is not dedicated to them (there's mum and daughter vs. dad and two sons balance, so 40% of the central cast).
3. Being a family movie, the superheroines are not oversexualized. Despite some gendered and soccer-mum stereotyping, this still could be much worse.
4. You get the Ah!mazing Edna Mode as the super-fashion designer, and she on her own is worth watching the movie. For real. She's creative, loves challenges, is not impressed by supermodels and fashion weeks (some fat-shaming, though!), and her fashion is super-wearable and practical. Plus, being an independent professional and having all the nonchalance in the world! Adorable.
(Now imagine a movie where Edna would work with the Powerpuff Girls! Uh! Oh!)