Your Options:
1)check with youf Office' Mandoob re
docs & fees; or
2)Go to the Immigration Department for better
explanation of the required docs & fees (this is
faster and first-hand info);or
3)ched this out- www.moi.gov.qa

Visit visa is only for a month (this is a fast way). Then, you can extend it up to 5 mos. when she is already here (making her stay here for 6 mos.)