Lmao I knew it. If only one of the others would win.
Anyway, she's an idiot. It's not "if they had interrupted us a minute later", it's "If I had been faster".
The same amount of time passed when he asked her what she wanted and tried to leave when she stopped him, to when she was interrupted.
Had she confessed at the moment he asked, there wouldn't be any more trouble. BUT she's a massive idiot.