This story is a sequel to Three T's- a Genetic Research story

Apple Bloom's life isn't so bad.
Her family situation's more-or-less settled down. She's getting used to calling her mom her mom, and her new sister's having a good time.
So why is she feeling so down?
And what's wrong with Rainbow Dash?

Part nine of the Genetic Research series. Start at the beginning here
Sequel here
Story takes place after chapter three of Peacevic the Rapper in...