Lacking the mobility and access in society that men generally have, widows in less developed countries such as Pakistan often struggle to obtain an income or social support. A widow and her orphaned children can end up being vulnerable and prone to exploitation.
The Islamic ruling is that after the husband, the responsibility of her assistance & maintenance falls on the son, father, and brother(s) respectively. Failing that, the responsibility falls on the community around her. Failing that, the responsibility is on the Muslim ummah as a whole.