this part is confusing. it seems like she's saying she wanted to be working and have kids the whole time? hard to understand how you could get that far along the path without realizing it's the exact opposite of what you want. a more reasonable way to understand the quote is that she simply changed her mind after realizing the implications of their life path.
which leads to a more reasonable way of interpreting this line:
> [article author] And that was it. That the second big ticket problem, critical issue #2. She couldn’t get her head around the idea that we were different.
I think (or at least hope) the author isn't saying they are special people with some kind of special destiny to FIRE. if I read it as "she couldn't accept our being different [from our friends]", it makes a lot more sense. I think the author is painfully aware that working and starting a family is the "normal" thing to do.