It's okay! Around the time when Murai was finally better enough to go home, Karkat had to go back to the Veiled creche with her because he'd gotten caught up in a mess with a Genius from said fanline and Nemo figured that being anywhere near said Genius while he was in recovery was probably a bad idea. So congrats, Murai, your bff is now providing your back-up on Veiled missions while pining for Mad Science but that's nothing new.