Sorry to see it from the perspective of a small, under-paid captain. But when MY wife got her university degree or as she was presented with her private pilot's license, it was natural for me to be there and attend the ceremony. Own life or not. This is called "partnership". You give up a part of one's life for a partner.
Well when *I* was in university, being the top of my class and graduating with honours, there are some things I wouldn't have time for, including cross-continental travel. I'm sure my professors would have LOVED to hear that I couldn't hand in a project on time because I went to the People's Choice Awards instead, and my parents would have been THRILLED that they're contributing to my educational success and I'm not giving 110% because I *had* to go to the Teen Choice Awards with my girlfriend even though she's perfectly capable of attending on her own.
I go to a LOT of work events, and I don't take people along with me, choosing instead to mingle with co-workers and network. Award ceremonies can be a similar event. It's not like it was the Golden Globes or an Academy Award and that they're MARRIED. It was the PCAs, he's her boyfriend not her husband, and he (presumably) has his own life.
Relationships where people do EVERYTHING TOGETHER are not necessarily the best relationships. People need to maintain their autonomy.