Mafia 101. Disputed Island

I think the first sentence is more about ignoring enemy defense.

Added after 42 seconds
Or just a literal description. Although...

Added after 6 minutes

Perhaps, in terms of fighting enemies, she was the best of us.

Possibly an attack on the killer.

at the same time, in any skirmish, you could count on her protection.

Looks like protection against physical attacks.