Explain to me what the question "Or was she?" means, please. The text is:
I heard the back door and froze. If anyone came my way, they might see me, so I pressed back against the window well, hoping to melt into the darkness. "Where are they going?" I whispered. "My way," Ashley said. "Run!" "Can't. Be quite." It was weird standing in a window well, listening to your sister get caught. Or was she?
