in my sisters case i went to the visa office in person and sponsored her on my name and not my husbands( as i was led to believe)the appliocation was accepted and i will get the visa today.
the problem with single pakistani women is that the pak govt restricts their travelling alone especially from pakistan. if she is a working lady with proper residence visa of a GCC country then there may not be a problem but, on entry, visa is given only to select professions! doctors, engineers etc. so tell her to confirm if ppl from her profession can get it on arrival. make sure she doesnt travel without confirmation or she will be turned away. my sister and her husband drove all the way to the uae muscat border in the hope that they will get the entry visa easily but were turned away because of a technicality, so do ur home work!