Introduction was somewhat hard to read through... Lots and lots of exposition.

Description of the son is somewhat weird: story jumps from him being a foal to his looks as an adult (complete with a cutie mark).
<-------After finishing the story------->

A very enjoyable read overall. As I've expected, the introduction chapter could've been spread across the story, with the information fed to the readers in a more natural manner (for example, Twister could have a conversation about her family with another patient or Nurse Redheart).

I think you deserve extra praise for an honest depiction of a common pony's struggle. And some more for a realistic intimate scenes.

Introduction of cars and phones into Equestria with ponies still being quadruped feels both bizzare and, in the end, rather pointless. It makes the whole setting less unique overall.

The whole drama surrounding Stormy ended up feeling rather contrived. Why would he feel abandoned in school if there are phones in this world? They couldn't write each other a letter? And it's hard to feel sorry for him after he let Rain Dancer fool him twice like she did.

Overall, I have to agree with xRei. Thank you for the story.