>I agree with Rin, and we do not know if that would even work if we tried, though it's a worthy avenue to investigate for the future. For now, I think we try the conventional approach.
>Start to casually withdraw and work our way around to the back of the school, gesturing for Lily to follow. Do not take the most direct route if it would be obvious to observers where we are trying to go. If we can circle around from some distance, or use the cover of other buildings or treed areas to disguise our course, do so, but try to be casual about it, such that if anyone stopped up, we could have plausible deniability.