Yeah, and her Lost Children mini would've given them the perfect excuse for Courtney to look younger i.e. how she looked 20 years ago, instead of looking like an adult. Everyone who was on that island ended up being de-aged to around 16 even if they were originally older (like Dan the Dyna-Mite, who was elderly - he de-aged by about 80 years!). She should mentally be about 21, even if her physical body got regressed to 16. Instead they just wrote it as if she hasn't aged up at all, which definitely breaks continuity as it pushes her down from the Young Justice generation to Damian's.