This condition is called Vasovagal syncope which causes you to faint because your body overreacts to certain triggers, such as the sight of blood. It’s actually a hereditary condition she got from her father. He also faints at the sight of any blood.
Fortunately for Cait, she only faints at the sight of her own blood. She’s got no problem swimming in other people’s blood.
Good thing for her, since she’s currently scribing at a couple of Emergency Departments.