I don't know to what extent this may or may not pertain to Sharia Law where the welfare of Pakistani women is concerned, but it might be relevant to note that Pakistan ranked on a list* as one of the five (Afhganistan topped it by a good head incidentally) countries most dangerous to women.

http://www.trust.org/documents/womens-rights/resources/2011WomenPollResults.pdf

Anyone interested in the subject might wish to do a little reading around certain prevalent and even commonplace cultural practices such as honour killing, acid throwing, forced child marriage, stoning as punishment, domestic violence and so-on. There's plenty of academic papers available out there including more detailed research on these subjects for anyone interested in the subject.

* compiled by Trust.Org: http://www.trust.org/