This is a mistake. Talking to her is a mistake.
Are you aware that to an outsider, such as USCIS officer, this may look like stalking? She wants you to give her answers you're giving that she will use in her VAWA claim. E.g. "I wasn't safe, he insisted on getting to know my physical location, trying to push me to stay with him".
Just cut all communication. In all honesty, the more this chat, ultimatims etc continues, the more she would look like a legitimate VAWA victim...