As far as i know, that is not so difficult.  If you know any mandoub, ask him for help and explain that you want to sponsor someone not related to you.

Even your travel agent can arrange for it.  Al Deera is one example.  They can book you in Al Maha Services at the airport.  They will provide everything from visa processing up to clearing at immigration here at the airport.

You have to check if her nationality is among those who are being granted visa at the airport.

Examples are:

·         USA·         Greece·         France·         Germany ·         Sweden

·         Italy

If not, then you have to process at least 3 days prior to her departure.