Is this weird to anyone else?

One of my old friends Mother disappeared for three days. It was sketchy, like she just disappeared from her apartment and her van was found by her deceased mothers trailer in the woods abandoned. (Thank the lord she was found safe today.) Anyways my friend literally said nothing about it, she even went on vacation the day her mom disappeared (she knew her mom was missing, her stepdad told her plus it was all on Facebook.) and posted a picture on IG on the beach and it captioned "No worries here!" To me this all seems weird because if my mother disappeared the last thing on my mind would be a beach trip. I would be scared to death and in tears and my friend is literally acting like she could care less.😳 Her actions just seen a little off to me.