USA, Canada / OBTAINING POLISH CITIZENSHIP (living in the USA). Petition documents? [28]

I have a question. I would like to know if anyone can point me to the right place. I married a girl who was living here in the US illegally. I fell in love with her, married her and had 2 kids. After her papers were fixed, she was able to fix papers for her whole family who already were all living here illegally. Once all was taken care of, things changed. I caught her cheating on me with her boss. I was thinking of my kids so I took her back. Few months ago, she just decided to take off and live with her aunt just a few miles away from me, leaving both kids which I don't mind because I want to keep them. From what I heard is seeing her high school sweetheart from the Philippines. I feel like I was used to just get her citizenship and now that they are all set to live here permanently and legally, she decides to kick me to the curb and at the same time, I feel threatened that she will take properties I had before I met her. What I need to know is, (this is only a plan b) If she just used me to permanently live here, is there a way to take it back.