That doesn't really contradict what I said; having a family is a risky endeavor that requires a lot of trust. For some people, that's their life's ambition. If someone wants to have a large family (e.g. 5-6 kids), they're going to need to get started in their early 20s, and they're going to have to find someone they can trust because they're pretty much going to need to devote themselves to that. Or if they hope to see their grandkids' college graduation, assuming their kids have kids at the same age, the chances of that happening start dropping pretty quickly after your mid 20s. It sounds like that person is ambitious and intelligent so presumably she found someone compatible with her goals, and hopefully that will work out. I'm any case, having family be your top priority doesn't mean you're short-sighted. She's just willing to take a risk for the life she wants.

Fertility stats are easy enough to look up, and like actuarial stats, they're always unfortunate to look at. IVF can help, but it's expensive and also not a very high success rate by late 30s.