Sending her to Bahrain / Dubai for 3-4 days... consider the flight ticket and 3-4 days hotel expenses etc.

why dont u hold her visit for a few days , till you get a visit visa in her name.

You say, she is your wife. If you produce the marriage certificate, salary certificate etc,,,, you may get the visit visa within 3-4 days, and it can be extended up to SIX months !!!!
( while tourist visa is only for 14 days)