12:26 Yes, it is halal but before slaughtering the cow/any meat (Expect form haram meat like pig etc) person need to say a certain prayer if that person doesn't then it is not halal. 12:58 if she is a Muslim she can't cook it or eat it If you want more details let me know and I can also provide you with sources you can check you out if your curious I if don't know.
