Thinking about the questions LVD asked NJ to inquire about exactly what information about LVD that CV might have shared with NJ.
Lori grabbed Charles' phone the morning of July 11 and took it with her when she left in his rental car with Tylee, JJ, and JJ's service dog, Bailey. And we've learned that at least Tylee knew CV's passcode to get into his phone.
Surely LVD must have read the text messages between CV and NJ after she left the home after CV was shot until she returned to the scene roughly an hour later. So LVD KNOWS how late into the evening NJ and CV kept texting with each other after their date on July 10. And she KNOWS the details about what CV said about her (LVD) in those texts. The only mystery is that LVD cannot know what CV shared in phone conversations as CV's phone would only have the data about the call (when placed/ended, to/from whom, length of call).
My guess is that because NJ and/or CV mentioned Adam in those texts (because CV had told NJ he was meeting with Adam the next day, and may also have shared more about Adam), LVD has assumed that NJ was herself acquainted with Adam.