I'm sorry but to me it sounds like a lot of bla bla about how their startup is all about work life balance, and a small footnote addressing the real "problem":

I'm sorry but to me it sounds like a lot of bla bla about how their startup is all about work life balance, and a small footnote addressing the real "problem": "yeah, I have planned for that". It's crazy to assume that having twins won't have any impact whatsoever. Even if she says she will hire full time help. Is that a 100% certainty? Or just a 70% certainty or whatever? Even if she is 100% determined now to have full time help, she might change her mind once the babies are there (nobody knows what it really feels like before they have their own kids). Even with full time help, I suppose either she won't be breastfeeding or it will be a lot of hassle. So while I won't say it is impossible to work at the same time (although personally I can't see how, I have a lot of respect for anyone with twins to begin with...), there still is some distraction. Seems to me it should be the right of a VC to take that into account.