He lost 0.58 so nothing major, he can still see the balance on the blockchain so he no doubt he'll be watching that balance grow in the future, he remembers it was worth around $110 at the time.
Wow, it was not major at the time you mentioned but with current rates it is about $6000 and I will not be surprised if it is worth $100000 in next 5 years. This can be really depressing for your friend. I suggest him to stop seeing the progress of that money as it will make him sad only. He should better start making new investments and watch them grow. He will not get much for $110 now but he can contribute each month and then all of it will add up.