Star dream?

This is a dream my sister had that is bothering her a bit.

A yellow star was breaking apart (it had a face) and it was talking to her, (can't remember what it said) than disappearing into her skin. A mysterious figure told her to find it. She went across the entire world to search for it. A location she remembers is a snowy area next to a river with an island on the side. She was swimming towards a fake seal which was facing a waterfall a couple of feet in front of it. She had to jump on the seal's tail to reach the island. On the island was a guy and the guy said that the star wasn't there. (It's a bit fuzzy what happens after this spot so flash forward.) When she finally found the star it was a bigger yellow star and it was imprinted on her right hand.
That's all she remembers.
She has my permission to post this.
She is trying to figure out what this means.

Edit: She is a sixteen-year-old female who lives in Canada. We are going to out friends cabin in a week. She has a really busy schedule and has been thinking a lot about her life.

there is something very special that she is searching for, that she is going to find

Yor sister is 16 year old..teh little star could be herself, or an aspect of herself. She has to find it, her Self in a character of mysterious person tells her that...a massage from herself or her subconscious to her ego, what she should do.
So this is kind of a call of subconscious to go for a voyage to find her real Self(at her age this is normal, she is changing-growing up and so on...). So she goes around the world(there is an interesting book of this kind of life-dream voyages by Richard Campbell by title man with a thousand faces-you can look to wikipedia for a brief feeling) and finds herself in a country, where she should swim to the island. This is kind of a test, like in fairytales( a hero has to pass difficult tests, fight dragons, swim lakes, travel nine mountains, go into the cave, etc.) When someone has to go into the water it means it has to do something to "clean up" himself(water). There is someone who will help her by that(seal, here stays the question, why is he fake..we don't have enough information about that) and she comes on its tail to the island.
There a guy tells her, that the star wasn' there...so she still has to search for her(maybe the guy or a boy from the real life isn't quite the right answer). So she finally does find her star(treasure of life, some kind of way of life, her role in her world) and it is inprinted on her right hand. This star is bigger-this search has made her stronger, bigger, brigheter...the journey was succesfull
Your sister must be a deep person with good inner sense-do look at that Campbell's Hero with a thousend faces.