In case anyone here is interested, a couple of months ago I started work on compiling and analyzing every panel that Monet appears in. I post one panel every day, and I've still got a long way to go, so check it out when you've got the time. https://harpy-monet.tumblr.com/tagged/every-monet/chrono
In short, this tangent of mine came to the conclusion that Monet perhaps might've fit the "mother" role of the Donquixote Pirates for the 10 or so years she's been a member