Feb 6th according to immigration is the last day of stay for your spouse in Qatar. But you just take another extension form and go just before a week to extend the visa. The captain might give you another extension for a week (7 days) or 15 days or sometimes even a month. If he approves then you can stay till the new extension date. If you are unable to get extension, then they will charge Qr.200 per day of stay in Qatar. Note: For extension, when u meet the captain he will ask you to bring the ticket for your wife on the date mentioned by him. so take the form, passport and meet him. He will ask for ticket, Then you can bring a ticket on the date mentioned by him the next day and get the visa extended. good luck