Questions regarding I-751 divorce waiver

[phinus 2]

First question:

I filed for I-751 divorce waiver last December 2010. I had my early biometrics on January of this year. Last week I received an RFE for divorce decree, divorce petition, copy of our drivers' license and pictures of our wedding and other people's wedding etc. I already sent almost all of the requirements needed in my original packet except for the copy of our drivers' license and pictures of our wedding. We only had a very simple civil ceremony.

My divorce decree though, was corrected due to my ex-husband's name- the name wasn't his. It was my lawyer's fault... Anyway, I sent in the copy with an incorrect information (husband's name) but I enclosed the notice of correction from my lawyer. After a week later, my lawyer mailed me the corrected divorce decree. I decided not to send it to the USCIS because of the notice of correction I enclosed in my packet.

Perhaps the reason I got this RFE was because of the divorce decree? Why did they ask for pictures and stuff? Please advise.

Second question:

I was the one who filed for the divorce. It was uncontested due to irreconcilable differences. However, the reason why our marriage fell apart was because of his drinking and use of drugs. The first one year went fine with our marriage. He was already drinking and using drugs then but it didn't go bad to worst til he lost his job. I was there for him and I tried to help him with what he was going through. However, he never let me in. Almost every weekend he was out with his friends and didn't come home til late afternoon the following day. I asked him a lot of times to seek out help for his vices. He always said, 'there is nothing wrong with me'.

While I was working and trying to budget the money we had, he was out and wasting it for drugs and alcohol. We fought almost every day coz I wanted answers while he wanted me to ignore his behavior and let him do whatever he pleases. Not to mention, how mean he was every time he was under the influence. The emotional abuse was too much for me to handle. I fell into great state of sadness. Til I finally had enough...I moved out last June of 2010.

I thought he would come around and ask for him. I was wrong... I was so mad and sad at the same time. I filed for divorce in October and got my divorce decree two months later.

My question is this, will the USCIS question my reason of divorcing him- why didn't I go with habitual drunkenness or such instead of irreconcilable differences? Please advise.

Thank you.