Yes, it has a red flag bro but not a death sentence. Your moving to another city without her cld raise a question hence her refusal to move with you which caused the divorce. Obviously you got ur GC tru her, an American citizen I guess. Now u got ur GC and wanna dump her. that's the red flag USCIS will raise. I wonder who advised you for this divorce at this stage. Cld have waited till u get ur citizenship while still with her, just a little less than one year more. If you have the strong mind to continue your filing of N400, Good luck, or you have to wait additional one year to make it mandatory 5 years, then you can file alone as a divorced GC holder. If in a fix, an Attorney may help! This is ur last stage and u need nothing to spoil it. Good luck!