I think you are projecting your situation onto this one. We don't actually know the details of what this woman's husband did to his daughter. A sentence of 25 years could very well indicate violent rape. Amazing episode by the way. To the person put off by her nervous laughter, I think it's a perfectly normal, valid response to a tragic situation. A few times I thought the laughter almost crossed into crying. I can't even begin to imagine how I would react to something like this, and I don't think it's something that should be judged. It's literally a response created by her brain sensing stress. Would you judge someone with Tourette's? It's not really that different.