So, how does one best approach the type of character with a lot of traumatic backstory without coming off as an IC drama queen? Their issues still affect them even if they try not to let on, but they're in the process of working through them.

I feel it'd be pretty awkward to bring it up in ooc narration every time the conversation heads toward any sensitive topics for them, but it'd also be awkward to just gloss over them like they didn't happen.