that's kinda the point, she's always just waiting in the wings for Dick while he's with Barbara or someone else. She's been burned by writers preferring Babs too many times, and because she's almost singularly reserved for Nightwing everytime that happens (and is often portrayed as a sex positive character) she ends up reading like Dick's "exotic" piece of ass on the side. Even in Titans Academy the relationship is being invoked just to already be used to do more of this love triangle nonsense. we didn't even need it. Dick literally just married Barbara in Death Metal, and the whole conceit of Death Metal is they remember shit, so he SHOULD remember he chose to spend what he thought were his last hours marrying Barbara; and iirc, I'm pretty sure he left Starfire at the altar when they tried (and he should have memory of that now too). so, considering Barbara is going to be playing a significant role in Nightwing's book, we really didn't have to or need to hook him back up with Kori again. they could've just been friends and living their own lives, but nope, we have to do more of this seesaw nonsense. also, because of Future State, we already know they're gonna have another major falling out anyway; it's all just played.