Ok, so it's been a few days now. Let me give some more context. Dh just made his fb account and isn't friends with her. She messaged him, after not speaking at all for 18 years, and the only thing she said was, "Your son is graduating tomorrow." That's it. No, hey can we talk. No, I have something important to tell you. Nothing. I talked to my mil, who still lives in the same tiny town as this woman, and she told me that this woman not only doesn't have any kids, but that there were no graduations that day (mil is a teacher). She's also a meth user and I pulled up her arrest record online, but couldn't find anything about her having any kids. Dh said she was sleeping with her ex when they were together, and she's also bipolar (actually diagnosed) and frequently quit taking her meds. He told me about her when we first started dating and knew nothing about her ever being pregnant. I'm leaning towards her just wanting to start shit, but still... holy shit, wtf.