Treating one's children equally

Q: A person has one daughter and two sons. Throughout his lifetime he gave and did more financially for one of his sons and daughter (best of education, flat, car, medical bills etc) whilst doing very little for his other son. Although yes he has given it to them as gifts but from my point of view it does not seem fair to the child left out especially when you consider the child left out is very sickly (ps his medication is free) and how huge the financial difference is. No fund has been set up for the child left out. Could you please comment on this situation so as to ease my mind?

A certain company promising to help the wife of their deceased employee

Q: A woman's husband passed away whilst at work for a company due to an accident within the company. The company promised help to the woman for next two years plus they paid her a lump sum. After she completed her iddat, the company refused to help her. She went to the labour department to report it. The department wishes to know how much was spent in burying her husband. Is it correct for her to show them how much was spent in the burial of he husband if someone else in the family paid for it? If the department do give her any reimbursement, is she allowed to accept it?