What is the ruling of Sharia when the woman observing Iddah, after divorce or death of husband, travels for a necessity?

What is the relationship between husband and wife during Iddah (Waiting period undergone by a woman after a divorce or death of her husband) taking into consideration that the Iddah was over and the husband didn`t take her back, so the divorced changed from Raj`i into Ba`in Bainonah Soghra?

A husband and his wife left to Turkey for temporary residence. They stayed in a rented flat. Unfortunately, the husband passed away. If the wife returned home to her children and husband`s house, does this violate the rules of Sharia concerning her Iddah?

What is the ruling when an irrevocably divorced woman stays at marital home with her children while the father is living alone in a nearby house?

My mother is observing Iddah because my father has passed away. Is it permissible that she leaves house to check on her sick mother?

My husband died and I am now observing Iddah, is it permissible for me to travel for Hajj since I have never performed it before ?

A woman was widowed in her eighth month of pregnancy. Does her Iddah end when she gives birth or after four months and ten days?

What is the Iddah period upon death of husband? What is the ruling when the woman observing Iddah after death of husband leaves her home to visit relatives although her Iddah hasn`t ended? What is the ruling on her wearing gold during Iddah period?

When Iddah (Waiting period) is Initiated for Deceased's Wife 

Is it permissible for the woman who is observing Iddah after the death of her husband to exchange calls with her relatives and husband`s family call?