Due to some inconvenience, the court work failed to work out. Not to mention the faraway driveway that they didn't have the energy to keep traveling. Caleb considered staying here, to finish up with the process before returning home, but with Christian gone Caleb had an impromptu responsibility to look after the pack. Sure Melanie helped, but it was still Caleb's primary responsibility. Anything urgent, and he had to be there.
To be fair Caleb was glad that his brother took this tiny vacation. For as long as he can remember, Christian was never the selfish kind. Everything he ever did was for someone else. Train to be an Alpha since he was a kid for the future of the pack. Look after Caleb because his parents were against his wishes. Endanger his own life so that Caleb could be with Ashton.