First, let me commend you for writing a really cool concept and explaining fairly interestingly the themes of sympathy and empathy through this personal story that the father tells. I also love the way it integrates some details of the guy's life, and the Spanish, which really seals the deal of familiarity. Unfortunately, I did find a couple bits here and there that need some work.
I think the main offense here is that, for a piece that should be and at times feel very personal, the bit about the death of Maya's mother and the fight with the drunk guy feel extremely impersonal; not in the content of what they say, but in the way they're described. They feel like someone who didn't live through them recounting a story, instead of something more personal that a person who lived through them would tell. The way they're told feels clunky, clumsy, and I feel it takes away from their proper emotional delivery. Now, they are odd, but don't hurt the overall piece, but what really does is the whole euthanasia bit at the end that also feels very 'from the outside' instead of described or presented in a more emotional way, and this really hurts the piece because it's one of the emotional highs of the story, or at least feels like it, and instead ends up as a rather underwhelming vignette right at the climax of it all. I really think this part should be a more 'show, don't tell' scene. This is what it all builds up to, so it can't just fall flat imo.
All in all, it's a really interesting piece, held back by a rather clunky execution. I think this has the making of a really good story, but it needs some work still. Novote.