you are in a very difficult situation dude. Have you renewed your wife's visa for 6 months? if you still have time for that, go and immediately renew the visa.

At times you can also show the immigration department officer a return ticket and request for additional stay (about 15 days to 1 month is granted) even if you wife is here on a visit visa for 6 months.

if nothing works, your wife needs to exit the country. overstay on a family visit visa is charged at 200 Qr a day.

hope that helps.