Ask an Immigration Solicitor. Get an Answer ASAP.
It is very easy but visa will depend upon your documents. If you are providing your required documents then she will get visa. priority service is available in Pakistan. But it takes 1 month to process the application.
i hope it will help you.
please you give positive rating if you like my answer.
1- system is not always slow but sometimes it is slow if they are very busy.
2- when you will submit application then at the end application will ask you for the service and payment.