The Nine Cauldron's has a girl running into a battlefield despite being weaker than anyone there and takes an arrow and dies. Why? Because she saw the person she loves? Why on earth would you do something so retarded? Then there's War Sovereign Soaring The Heavens has a girl who wants to help the person she loves but is just in the way all the time like it actually helps having to protect someone else or have someone else taken as a hostage, it's like they want to die or cause problems for their lover.
Anyway that's other novels, stop ranting over stupid sh*t characters in novels do without any justification other than stupidity.