Thanks for all your replies.

She has a husband here already and lives with him that why she wants to live out. For myself I dont really like the idea of a strange woman in my house.
We know her and think she should be ok. If they run away we just cancel her sponsership i suppose. oh it is so frustrating not knowing correct proceedures. Why isnt there an informaiton bureau for these issues. If you phone the departments half dont understand you and the other half we dont understand.