Sorry about your Dad & his Wife dude. Really am.
I got my hair cut about 4 times since I retired from the military in 2007, never shorter than just below my shoulders. I've been steadily losing hair the whole time, on top, but keeping it tied back most of the time hid it well. Then in the last year, wow... hair loss went into overdrive. I tried cutting it fairly short on the sides and keeping it combed straight back for a couple months... until I caught a side view of myself with another mirror. I looked like that dork trying to hide his bald by going around with a whisp of grey/brown smoke hanging just over his skull.
Buzz cut it the next day. F'it, it was meant to be.