So, the good news is you have two fantastic models for your main girls. The family dynamic seems interesting.
The dialogue, story flow, and story in general could use some work.
Examples: why would Emma introduce herself like that ("the feisty and outgoing one is here"). The same terms the MC used to narrate to the audience. Very unnatural. In real life I would feel like she has a major inadequacy complex and forces herself to act that way to differentiate herself from her sister.
Jumping to "stay 2 weeks with your Uncle" with no planning or explanation.
Imo, adding a sci-fi/fantasy element to your story to make it stand out rarely works out. I usually just find it a distraction, and this one managed to be distracting in a 5 minute intro. If that's the story you want to tell, go for it, but don't feel like it's a requirement for these types of games.