Oh, I think she went willingly. I've been surprised before, but I find it hard to be surprised about this, because MF doesn't particularly strike me as being too well versed in police procedure. I can't imagine her thinking or caring about people's Ring doorbells, or camera angles, etc., etc. Thus, I think she just got caught out. I don't think it has anything to do with a decision on "how" to spell it, probably because as a hobbyist writer, I'm kind of a student of naming trends and the phonetic tricks people go through trying to command a particular "uneek" pronunciation for people. My opinion is, she's probably "Megan" or a conventional version on her birth certificate, but was desperate to keep people using a particular pronunciation. (Source: I grew up in youth group with a girl whose parents had birth-certificated her as "Meegan", because they were so desperate to avoid "Megan" being pronounced as in "the month of May", or "mayflies".) IMO, this psychopath was clearly fixated on being pronounced with the most pretentious version of "Megan" that existed, and got tired as a wedding planner, etc. of meeting people upon people who had only seen her name written out on an event website, and walking towards her with outstretched hand "Hi, are you... May-gen?", pronouncing the last half as in "General Electric", as she greets them with gritted-toothed sweetness and corrects them. Yeah, it's probably not polite and may be sleuthing, but Mrs. Green is clearly overbearing and CG is clearly, well, the type of man you get with an overbearing mother who insists upon speaking for him. Maybe MF said they should go shopping together for what Heidi wanted to buy, as the shopping list on-dashboard clearly suggests that Heidi planned on going shopping. Since this was the first time they'd seen each other in ages that we know of, in the process of getting Margo bundled up and chatting excitedly away, Heidi was in the SUV and left these things in her car. "Oh, don't worry about that... we'll go back and get them!" Maybe helped along the way with a spiked drink, who knows?