Salaam,
Regarding testimony, please see:
http://quransmessage.com/forum/index.php?topic=330.msg1021#msg1021The inheritance sums are apportioned differently depending on the situation. In some cases the female receives
more than the male.
However, when she does receive less than her male counterpart, this will be due to the fact that the Quran maintains that men are to support women in general, so she should be looked after financially. By giving the male a greater portion in some cases, this would mean that he has to spend it on his female dependants.