Beckingham Ruins

The Beckingham family, probably the nicest family on the street. Hell, maybe the nicest family in the whole neighborhood.
Luke and his wife, Callie. Their son, Ryder, and younger daughter, Sierra. Plus their husky, Oreo.
They moved into that house when Sierra was only a toddler, and Ryder was just a young boy. Everything was fine for awhile. Luke worked, Ryder went to school, and Callie stayed home with Oreo, who was only a puppy then, and Sierra.
Until Sierra turned nine.
That's when her parents made a decision to adopt a daughter, considering Callie couldn't get pregnant anymore.
When all attention falls on her, Sierra is ignored. And when she tries to get even a slither of attention, she gets yelled at.
This leads to depression...and that's only the beginning.