Ur information is not yet Clear,
First make Confirm that, she is in Business Visit Visa

If so then, U can apply Visa under ur Sponsorship with the Present company NOC letter.
Once u get Visa, then go to emigration service center & transfer her Visa under ur Sponsorship.

Requirements for to Apply Family Permanent Visa :-
1. You should have Family Status Visa
2. Employment Contract attested by Labor Department
3. NOC & Salary Proof by your Company
4. Salary Transfer Bank Statement - Minimum of Six months
5. Marriage Certificate - Attested by Ministry of Foreign Affairs
6. Your Qatari ID & her Passport Copy
7. NOC letter from her Visit Issued Company (If she is inside Qatar)
8. Application form by Ministry.