personal visa

There's one more thing, i applied for visa for my wife, and they issued one month only, it says personal visa, is this renewable?, can i renew it without getting her exiting the country? please i'm new to this, all help will be highly appreciated..I thought this is a family visa that last for 3 - 6 mos, i guess it's not, hope to hear from those who had done this before...thanks
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