Getting divorced after 15 years of marriage and two kids. My ex was undocumented when we got married and I helped her get her permanent residency in 2009 but she has yet to get her citizenship. It came to light that almost the entire marriage she cheated on me with many different people and even one relative of hers. I have proof for a good chunk of this with a few gaps where I don’t have anything. If I were able to provide this proof to immigration on the grounds that she married in bad faith would this result in any sort of penalty for her or is she protected because of the children and permanent resident status? I just feel like I was taken for a fool thinking everything was happy and fine and in reality she was fucking around so much unbeknownst to me it’s ridiculous. Thanks in advance.

Edit: I’m located in Illinois.