If you go the route to reopen keep in mind it must be filed within 90 days of the date of the entry of the final decision. A motion to reconsider must be filed within 30 days. Whichever way you go, you should retain an immigration attorney. There are evidence requirements that an attorney can help you with. Good luck.
If an attorney helped you file, contact him/her and make sure you have the correct documents. Minimum would be to bring the documents listed. If you don't have the credit card and lease with both names on it bring another bill or statement that has both of you at the same address, maybe electric, gas, cable, phone, or gym membership, Have an attorney review the letter you received and the documents you intend to bring. Good luck.
Here is a link to a good description of what the CR-1 requires, go to the section labeled "Required Documentation." It states that a passport that is valid for 60 days should be brought to the interview. Good luck.
She needs a visa to come here. Visit the following link for the types of visas available. http://travel.state.gov/visa/visa_1750.html
If she has a visa, then send the invitation to her. An immigration attorney can help walk you through the process if you are unsure.
This can't be answered with the facts you have provided. The amount of time your wife must wait depends on her priority date. She should have a response from USCIS that the I-130 her mother filed was accepted and it has a priority date on it. You can look up the priority date on the Visa Bulletin. Depending on the country she is in and her age at the time her mother filed for her will give you a category. There is no way to tell how fast the priority dates will become current. Usually a...