I only saw someone who saved her life and continued to worry about her and tried to cultivate in her a healthier state of mind. She was going to commit suicide. She may be an adult and a lawyer, but she was going to commit suicide. He saved her and continued to watch over her. Have you never-- either in fiction or, perish forbid, in real life-- known someone who was self destructive, needed help, was resistant to that help and needed to be pushed and prodded in whatever way is necessary? Because it happens quite frequently, even when there's not a Zombie Apocalypse on. She would have no need to take his weapons, since he never tried to commit suicide. And she did try various approaches to getting through his defenses by appealing to his feelings, as happens in relationships between people.