My mindset lines up with hers on most things regarding relationships, self worth, and shit like that, part of the reason I got, and still am honestly, too invested in her. Those sort of surface "eh, I should kill myself" thoughts come from a collection of a lot of shit, I do the same thing. But the fact that she's able to somewhat joke about it means she's better off than it comes across to someone listening to her. If she stops making these sorts of jokes out of nowhere and still seems to be in the same mindset thats when we need to worry. Thats where its stopped being surface level and has become a real consideration. Again, from personal experience.