What would you name a fourth March sister?

Mine is not the usual question, but a purely literary and hypothetical one. With two new [name_m]Little[/name_m] Women dramatizations coming out this year (a bbc mini series in [name_f]May[/name_f], and a modern adaptation in [name_f]September[/name_f]), I started thinking about the characters and their names. I realized that the first three girls have well coordinated names: multiple syllabic given names with classic single syllable nicknames. [name_f]Margaret[/name_f] “[name_f]Meg[/name_f],”
[name_f]Josephine[/name_f] “[name_u]Jo[/name_u],”
[name_f]Elizabeth[/name_f] “[name_f]Beth[/name_f].”
The fourth sister, [name_f]Amy[/name_f] has a visually short name, but actually, as a two syllable given name with no nickname, it doesn’t “go” with the others. My question is, what would you have named the fourth sister that would fit the pattern of the other three?

My top choices are:
[name_f]Rosemary[/name_f]/[name_f]Rosalind[/name_f]/[name_f]Rosamond[/name_f] “[name_f]Rose[/name_f]”
[name_f]Louisa[/name_f] “[name_u]Lou[/name_u]”
[name_f]Mary[/name_f] “[name_f]May[/name_f]”
[name_f]Dorothy[/name_f] “[name_f]Dot[/name_f]”
[name_f]Anabell[/name_f] “[name_f]Ann[/name_f]”

If I were the author, I’d go with a [name_f]Rose[/name_f] name and call her [name_f]Rose[/name_f]. If I were her fictional mother, my top choices would be [name_f]Mary[/name_f] nn [name_f]May[/name_f], [name_f]Rosamond[/name_f] nn [name_f]Rose[/name_f], and [name_f]Anabell[/name_f] nn [name_f]Ann[/name_f]. What about you? Had you noticed this? And what would you have named the fourth [name_u]March[/name_u] sister? Or a fifth one (if you think [name_f]Amy[/name_f]’s name is perfect as is)?

It did always bug me that [name_f]Amy[/name_f] had a short-and-sweet name, while the other girls had longer names that were shortened with traditional nicknames. I actually imagined as a kid that she was an [name_f]Amelia[/name_f] called [name_f]Amy[/name_f], but that seems unlikely, given that we know all the other sisters’ [name_m]Christian[/name_m] names.

Although it’s not as brief as her sisters, I think I’d have named her [name_f]Caroline[/name_f] with the nn [name_f]Carrie[/name_f]. I also like [name_f]Louisa[/name_f] nn [name_u]Lou[/name_u], but it would seem odd for the author to have named her that, and from a writerly perspective, I don’t like that [name_u]Lou[/name_u] is as tomboyish as [name_u]Jo[/name_u]. Perhaps [name_f]Katherine[/name_f] nn [name_f]Kate[/name_f]? [name_f]Eleanor[/name_f] nn [name_f]Nell[/name_f] would also fit in perfectly.