It might bug you what she said, but about the bolded, it might also bug her what happened. Sexuality is a really complicated matter. Perhaps she DID take it personal, thinking that she wasn't up to snuff, despite you trying to reassure her otherwise. I really wouldn't blame her. I happened to me a couple of times as well (who doesn't have the problem?) And only a couple of women didn't take it personal.
Even an ex of mine, despite us having an otherwise great sexlife, worried that she did something wrong, if I didn't find her attractive anymore. And it only happened once. So yeah, just continue like nothing happened, and show her it's gonna be great next time.
And my date for tonight just cancelled! So relieved. She said she was sick, and I believe her. We set the date up like three weeks ago, but in the meantime I met someone else, who I think is a bit more awesome, and we're going out next friday. So I wasn't really looking forward to tonight. This is the first time someone actually cancelled on me, and I'm sort of relieved