@Ricardo_Rick
You must not read many manga. Lots of main characters meet their cast at knife point. Admittedly, most of the time that knife is shaking. But not always. The isekai with the skeleton has a beastkin that he met while she was murdering a dozen people. And the elf he met really early on was murdering people with a sword, as well. Both were killing slavers, but you left any and all stipulations out of your shortsighted comment. The situation matters a lot.
So your reply is invalid. We don't know her full, actual relationship with the demon girl. So she may just be desperate to get her liege back, for instance. Bodyguards are allowed to pull weapons on the person they think kidnapped their leader/ruler.
Better example of why your comment was downright silly. Superman and Batman beat the everloving hell out of people. So they're obviously 'bad' by your own comment. Who cares if the target is a murderer, villain, etc.