Oct. 27 (UPI) -- Caroline Flack's mother examines what led to her daughter's suicide in a new two-part documentary series due on Hulu Nov. 10. A preview for Caroline Flack: Search For the Truth, released Monday, shows Flack's mother, Christine Flack, at her daughter's grave. "I think Caroline would be pleased with what I'm doing," Christine Flack says in the trailer . "I wish I'd done it then, before she took her own life. And that's my biggest regret, that I wasn't shouting like this then, but