>>13077215Crystal. BUT ONLY BECAUSE she's the only pokegirl who would be good at both.
Sapphire would be the best mom, but not a good housewife.
Platina would be a good mom but wouldn't actually do the parenting since she has servants to do that. Same with housework. Why do it when you can pay someone else to do it for you?
Yellow doesn't strike me as a girl who would have kids.
Blue would have them, but she'd be pretty flaky on responsibilities and wouldn't be a good influience.