My mother-in-law hates my guts and we haven't even met yet.
This weekend, my wife and I will be meeting up with her parents for the first time after they kicked her out unexpectedly. This will be the first time I'll ever get to talk to her parents in person, or verbally even.
You see, my wife and I met online 2.5 years ago and we've always been one state away in distance. 3 months ago, her mother tried to catfish me and failed miserably. I had a fairly strong suspicion who she was so I went along with it for an hour and ended it with "Goodnight, $name. It was a pleasure finally getting to speak with you. :)"
This seemed like a badass move at the time but, the day after, she ended up kicking out my then-fiancee and I had to drive to her and have her move in with me. We've been living together ever since and got married last month. My wife has been in touch with her family online the whole time. Now her mother wants to meet me in person and refuses to video call before then. We agreed to spend a few hours at some events (restaurant dinner + pumpkin patch the next morning), because my wife really wants her property she couldn't bring with her at the time.
This is the same mother that filed a missing person report with me as the suspect when I went to pick her up (she was an adult at the time), refuses to acknowledge my good traits, hates my race, hates my family she's never even seen, hates my lack of religion (she's a Jehova Witness), hates my looks, hates the age gap between her daughter and I (almost 5 years), hates the fact that I used to play first-person shooter games as a teenager (found me online), constantly wants to get our marriage voided, and has sent my wife messages saying she would've murdered me if she saw me at the time I went to go pick her up from the motel she was staying at.
My lack of religion is perhaps the largest thing she hates about me, but I'm mainly concerned about the last part because she said it in such a serious manner which makes me seriously nervous about my safety.
How can I steer a conversation away from things that could be used against me?
Edit: the only reason we agreed to going is to get my wife's property she couldn't take before and, more importantly, her cat whom we have strong emotional attachment to. Were it not for that, we wouldn't even consider going. Agreeing to a quick dinner and event seemed like a nice way to make an impression on them along the way.