I got trapped under water by my safety line when I capsized in the GT300 this year. It was pretty freekin scary. I carried a knife but it was in my zipped up pocket and I couldn't get to it with full fingered gloves on. My lanyard had a quick release snap shackle and I still couldn't find the release. If you have kids sailing, maybe doig a few drills may save the next life.
Thank God my boat fully turtled and gave me enough slack to get a quick breath.
I'm so sorry to hear about this girl's death.