Breaks are rarely a winning strategy (on mountains they are, but those are a pure display of strength and will-power). Granted she is a mathematician and might be literate in road racing strategy but I'm sure a lot of that strategy is down to experience which she doesn't have.
When you’re extremely unlikely to win by conventional means then a high variance strategy is the best way to maximize your chances of winning. Sure, if you play this race out 50 times maybe she only wins 1 time by breaking away and hoping other riders flub up their response. But what were her odds of winning by staying with the peloton? 1/100? 1/200?
As you said, she’s a mathematician - she knew exactly what she was doing.