The other Grey

What if Meredith had a sister she's known about her entire life? One she grew up with.

After moving to Boston Ellis Grey makes it all work, and despite being a renowned surgeon even she needs a break. A one night stand that's all it's supposed to be, something she can forgot about, only that never happens.

How would the story of Greys Anatomy change if Meredith had to look after her 14 year old sister while starting her internship while keeping it a secret so no one finds out about Ellis?

Only one way to find out

Disclaimer I own none of Greys Anatomy. Only thing that is mine is original characters.