I just realize that the address in the tax form is her old address. She forgot to change her address to our residence. What effects will happen to our interview? Actually also with her Driver's license she did not bother to change the address...
If you have concerns about immigration interview it is always advisable to retain a lawyer. This is very important event for you and has a bearing on your future in the US, why are you unprepared? Investing in a lawyer will yield good return. It is the good faith marriage and a shared life that you should focus on, those address changes are minor although it might raise concerns, what address does W2 have and employer letter?
It's not too late to rectify those situations you have.