Misinterpretation about the 72 virgins

I happened to see this TED talk by Lesley Hazleton. She is an agnostic Jew and without bias she explains that Quran doesn't speak of 72 virgins. It is simply a misguided verse of the Quran. The verse no 33 of Sūratl-naba. I am a bit perplexed here. 1. In her speech she says, Quran doesn't speak of a number. 2. She also says, Quran doesn't speak of bosomly shaped women. Is that a misinterpretation of the Quran?