can someone explain why she doesn't like to be referred as a swordsman?

maybe because swordsman is used for
people who use swords like knight but they do it for money/kill people?

I feel like it means-something like a mercenary because mercenaries are paid swords

knights are affiliated with justice and honor
swordsmen are just people w swords, in her case she was a swordsman who did dirty things for money so it triggers some nasty emotions for her

Being called as a swordsman while being a knight means you have no honor, sense of justice and chivalry.

ooh i get it, thanks!!