By Gregg WendorfAdvance News JournalI’ve been on a morbid kick lately, what with the holiday season and all, watching this YouTube channel — TNFlygirl.The female private pilot who made the aviation videos, 45-year-old Jenny Blalock, died last Thursday with her dad, 78, beside her in the cockpit as her single-engine Beechcraft Debonair dove nose first into the ground in a rural part of Tennessee.She and her dad designed and built high-end custom homes in Knoxville, Tenn.; hence her YT online handle “TNFlygirl.” According to her online profile, she was “a private pilot, flying for fun.” Then she wasn’t. The sad ...