Nymphadora Tonks? Tonks like Ted Tonks? No, that wasn't possible, they had a daughter but she was just a babe still. He didn't know them well, but he knew that at least. And Hogwarts? That was impossible, he had just been on the continent - he had been tracking a man, he wasn't at Hogwarts that wasn't possible.
It was going to be unavoidable, he could hide here until the sun came up again and then that would give her time to call for help, or he could come out now and take his chances. He didn't lower his wand though - he might not have had a choice about coming out but he wasn't stupid. "I don't know what you're playing at, girl, but this isn't a game." At least not the sort of game that would end well for either of them, he said as he came out of the treeline wand on the woman.