The link between Equestria and Earth has always been a mystery. The mirror portal is known to travel through that link, but is there anything else that could carry us between worlds? This is what one "unlucky" human must figure out, or it could mean being stuck in an unfamiliar world. Fortunately for them, they couldn't have asked for better odds.
Twilight Sparkle is best pony I HAVE to push this agenda
I love that the main character is allowed to be vulnerable by nearly having a panic attack. I'm not sure why I like that, but... it's cool. I think the quality of your writing has already surpassed a good chunk of writers on this site, so keep it up!
good job so far
Missing word but good work.