JMO - But let's just suppose Bob really was as his daughters portrayed. they certainly spent, what, another 30+ years keeping him in their life once they became of adult age. Technically each of his daughters are about double the number of years Bob was 'legally' responsible for them as minors. I find it terrible hard to believe an adult who was a victim of any kind of non fictional abuse would continue to keep someone in their life for an additional 30-35 plus years. Not to mention, the mother they so adored would have remained happily married for more than 50 years to someone as 'evil' as Bobs daughters attempted to portray him. Imo, IF, Bob was so 'rotten to the core' they would have cut contact with him AND his money once they became legal adults.
Which is why, I think the image they attempted to portray of their father was for one purpose and one purpose only, with the hopes this case would get cold, stay cold and the old man would be simply forgotten. I'm here for the long haul for Bobs case.
JMVHO