Is what happened considered a dereliction of duty that necessitates fasting, and if so, upon whom is it obligatory, and is it permissible to divide it?

If the father's negligence and dereliction of duty in caring for and safeguarding his daughter led to her death, then blood money (Diyah) and expiation (Kaffarah) are obligatory. The blood money is incumbent upon the 'Aqilah (male agnates), and the expiation is upon the father. If there were more than one responsible party, then each of them must fast for two consecutive months. However, if negligence is generally not present, then nothing is incumbent upon them.