I'm very sorry you have had to go through this. Very hard for your mum but tougher on kids because that's your start in life. I'm still amazed that being respectable and loving at the KH is considered far more important than what goes on behind closed doors in the family. Whitewashed graves springs to mind.
It doesn't sound like any possible outcome can compensate for what you have had to go through so don't be disappointed if you get continued lack of justice. There can be no real justice in this case.
best of luck
MMXIV