I’ve shared but been holding off posting my personal theory here, hoping for additional info from LE but think no more will be released until court proceedings. IMO, there’s a connection to the force of personalities between ML & AA. First with ML, initially when SD issue was identified there was mention of podcast that she followed “Call Her Daddy”. ML friends stated here that her interest in podcast was a means of empowerment for ML. Friends didn’t elaborate that I’ve seen, from media articles, the podcast is form of self help in sexual relationships, mainly targeted at women, empowering them to take charge and be outspoken. If we look at ML’s post for advice in seeking a SD relationship, from her wording may have appearance of a “take charge” attitude in how (Tinder App) and who (age 35) for SD relationship. JMO, the SD/SB lifestyle was fairly new within last year or two, maybe. From her posts, at that time, she had only two relationships. Although, may not be factual indicator, she had been in a traditional relationship, her ex-boyfriend was interviewed on TV when ML first went missing, not sure of time-line for that relationship, seems recent. So, again, JMO, SD/SB was not a dating style she had tremendous amount of personal experience but one she used to feel empowered in a sexual relationship. I’m not going to speculate on what she wanted out of relationship.
Now, in taking a look at the personality of AA, not certain of any exact disorder (Narcissistic, Psychotic, Sociopath, etc.) but there was possibly some trigger, he was a powder keg ready to explode. So, if you add the possible take charge attitude and the seeking of “empowerment” advice by ML, that could’ve been the spark to set off his evilness. AA seemed to have exhibited questionable behavior over several years, based on statements by ex-wife, ex-roommate, dating app connects as well as details from handyman and house cleaner. Depending on details of ML and AA connection including history and means of communication (duration, electronic messages, phone calls, in-person, etc.), which we don’t and probably won’t know anytime soon, IMHO, it’s likely ML didn’t have opportunity to actually see behavior by AA to truly raise Red Flags or she lacked experienced to recognize. There was comment about her discussing AA with a friend, again no details to know for certain the actual context of conversation, if she was concerned about the connection in general or of a certain behavior he exhibited. I think she was at a point in life, for whatever reason, she was questioning relationships and looking for answers. My personal opinion.