I think the aftermath of SA2 has been done many times, but this one was done quite well, and in character.
The insite of the impact on Sonic and Amy was well done, and quite emotional.
Though I have played SA2, there are a few plot points exploited through this so I think you should think about at putting an exclaimation point in next time... just to be save.
You could see the improvement in dialog as the story progressed, since there were first a 'Hemmingway style' of just script type back and forth speaking to showing what the characters were doing as the spoke and how their actions conveyed their feelings.
Good luck in your future righting.