As others have said, you should cease all communications, and do all divorce negotiations through your attorney.
To help prevent her from harming other USC, you can try to collect proof, and tell USCIS them about the bribe she offered you. Though with no proof, it may not help. But it won't hurt you. In fact, it can protect your USCIS reputation in that you are not selling a GC. Again, everything except withdrawing the I-130 won't help, but I don't think it will hurt to try. But it may be fruitless.
If you have medical insurance, you should see a therapist ASAP to understand why you think you love despite knowing nothing about her for the most part, not to mention being abused and manipulated by her. Repeat, see a therapist ASAP, if for no other reasons to help deal with the divorce trauma and even bring your daughter. Even though you may be a therapist for others, you can't treat yourself.