Also I think about grown up Catherine a lot and the type of person she’d turn out to be. I don’t think she’d do the military/mercenary thing per se – tbh I see her so deeply affected by her father’s death that she studies criminal justice and idk maybe foreign relations at university, then gets accepted to Quantico and becomes a detective for the FBI. (Tell me you don’t see adult!Catherine in a tailored suit with a badge at her hip, complete with Daddy’s trademark scowl when she’s about to question someone)
And her personal side project when she’s not working is investigating her father’s cold case with the hope of eventually getting revenge, hoping that anyone even remotely involved might still be alive, or at least as some way for her to get closure. I see her going to question people who might have known her dad and them getting all weird and nostalgic, like “Holy god, you look just like him” and maybe moving in a little too close/touching her face but unlike her father, she’s frigid and emotionally closed off (for obvious reasons) so she just kinda stiffens and stonewalls them while keeping her hand on the gun at her hip and very curtly tells them to sit down because she just wants to ask them a few questions. And it sounds more like a threat than anything else.
Occasionally though, if you really set her off, she has her daddy’s spitfire temper, and she’ll unleash merciless rage/violence on you if you’ve pushed her too far or don’t give her what she wants in a timely manner. This was demonstrated once when she nearly killed a suspect while “interrogating” him and was put on temporary suspension. She’s a friggin loose cannon for sure, but she’s a damn good agent and while of ambiguous moral standing, she’s ultimately one of the good guys, just like her dad. She just uses questionable methods sometimes to maintain the balance, as it were.
Good lord, Special Agent Catherine Miller, yet another thing to add to the daunting list of ‘fics I need to write.’