i too was into BTC pretty early, but i was a miner and over the few years i did it i went through literally thousands of BTC but i always ran with the belief that for it to work people have to spend it, so i did on just about anything and everything i could find, in total ive very likely had over 10000BTC pass through my hands including one physical cassascius coin (which was actually one of the first run with a misprint, this too was sold at what was far too little really, i got a few hundred quid for it, but bills had to be paid) but of all the things i ever bought one always sticks in my mind and that was paying 40BTC for a 250g bag of coffee, by todays standards that was some pricey brew!

on your story id say dont give up so easily, sure you broke up on bad terms but im sure that would be overlooked rather rapidly if you asked if she had the PC still and if it is on there and recoverable you will split the profits of it with her, she may say no, or even lie and say she doesnt have it and pocket the lot, but she may also say yes, if you dont try youll never know, theres nothing to lose and a whole lot to potentially gain