@ignatius, I am also the youngest of four girls, but we are all relatively close in age (and as different from one another as Meg, Jo, Beth and Amy!).
Well, I won’t lie to you, I did find it a little schlocky — in that there is minimal character development and a lot of histrionics. But it’s enjoyable, and I believe Louisa May Alcott is making an important point or two between the lines.
I read an academic essay about Behind a Mask that had a few good insights. I say “a few” because, to be honest, I don’t care much for the academic papers — they flail about with too much academic lingo for my tastes. For example, in the paper I’m referring to, the thesis statement is, "I contend that in Behind a Mask, Alcott emphasizes the instability of ethnicity, specifically Jewishness, and class, specifically governesses, in order to challenge the dominant, Christian and patriarchal social order.”
I’m not even sure what “emphasizing the instability of ethnicity” means. But I digress. I come not to bury this writer but to praise her. She points out that Alcott compares Jean Muir to Rachel (the actress, aka Eliza Félix): “Miss Muir was just before them, apparently listening to Mrs. Coventry’s remarks upon fainting fits; but she heard, and looked over her shoulders with a gesture like Rachel. Her eyes were gray, but at that instant seemed black with some strong emotion of anger, pride, or defiance" (p. 6).
I looked up Rachel (knew nothing about her!): https://jwa.org/encyclopedia/article/rachel-eliza-rachel-felix
This line jumped out:
The “slight build and burning eyes” description fits Jean Muir to a “T;” whereas, the “masculine” part belongs to our other heroine, Jo. In any case, it’s easy to see why Louisa May Alcott might have found Rachel fascinating. The essay author writes: "By portraying Jean as Rachel, Alcott assigns her character a unique mission: Jean accomplishes her goals through her conscious performances both on and off the stage, proving that women’s will and agency are reliable tools in their struggle for a place in patriarchal society.”
The author adds that having Jean portray Judith in one of the tableaux was a deliberate choice, as Judith "decapitates Holofernes without being punished for her crime (Chapman 1996, 32-38, 43).” It both foreshadows Jean’s triumph and also expresses some rebellious commentary on the patriarchy.
There’s more…the paper’s rather uneven in my opinion, but if you want to skim through it for the highlights, here it is: http://www.otherness.dk/fileadmin/www.othernessandthearts.org/Publications/Journal_Otherness/Otherness_4.2/3_Nevena_Stojanovic_-_Alcott.pdf