This is really a no brainer.
Like Der Trihs, I’d even go as far as to say that I think a slave has every right to kill anything that stands in their way to gaining freedom. It isn’t even a matter of dead person’s level of sainthood or whatever… If they, legitimately, pose a threat to a slave’s escape from slavery then they’re ‘fair game;’ be them man, woman or child.
Sick situation, but that’s not the slave’s fault.