Whatever she had been expecting, it hadn't been that. She didn't break stride for a moment, her face etched into a scowl. Then, suddenly, she stopped. "You aren't..." Catching the words before they came out, Lily shook her head, frustrated.

"I don't know."

She did know. Not all of it. But for part of it, she did know why she kept so much shuttered away from Sirius. But she couldn't explain it to him. It would only make things worse - besides, it didn't even really make sense, not even to her.