When it was her turn, Tracey stood and introduced herself politely. "I've little to no contact with Muggles, so I don't know much about them," she admitted. "I know that they use technology to make up for their inability to perform magic, that they dress differently to us, and the men don't wear robes, and that several centuries ago, they attempted to hunt witches and wizards, but the methods they used to deal with us, such as burning at the stake, had little to no effect on a true wizard."
She was likewise aware that like giants and Veela, Muggles are obviously capable of breeding with wizards. But some instinct - likely in combinatin with the readings she's done with Daphne and Theodore - told her not to say this.