Hello! Thank you for playing A Frigid Space. In order to get Noelani's last two CGs, you'll need to go through the New Game+ route and get Kana's trust to 30 (note that the trust meter is invisible). You'll unlock both CGs and get Kana's 2nd ending as well. If you still can't unlock them, let me know. I've just tested it and I managed to unlock both.