IF you can go pick her up you should do so. Often at the POE she will be asked many questions and it will be easier for her if you are there. I remember the words they said to my wife, "if you are not married in 90 days, out you go!" In addition, there are forms you have to submit, it can be confusing unless her conversational english is good. The Homeland Security officials have alot to deal with at the POE, etc. and not alot of time to do so, so my recommendation is go and bring her back if you can.