Win a won game?

Hello!

It's me, Midna!  I mean... er... uh... Stacia Melinda.    And I'm on a mission.  I have been studying hard and ready to prove that I'm better at chess so I'm playing games on chess.com and I'm ready to break 1700.  Or at least, I hope that's true.  So I'm playing training games and I will share some of the most interesting ones here.  Like this one    

Now in this game I was winning.  I was up a piece even, but somehow I became scared and so so passive after I was up material to the point where I was worried I might pacify myself into a drawn position.  But here's a key moment where you can just end the game.  See if you can do better than me.

And here's the full game.  Buckle your seatbelt I play the Smith-Morra Gambit!