Martha is dull and heavy and frumpy.
Sally is cute in a poodle-skirt and saddle-shoes kind of way. Better than
Sarah which is duller than yesterday's dishwater.
Elizabeth I don't really care for but it's not awful.
Betsy is cute the same way as
Sally is, only a little more cutesy, probably because of the old B is for
Betsy books.
Martha,
Sally and
Betsy sound like sisters, sisters about sixty years old now who take bus trips to gospel festivals and Indian casinos.
Martha always brings her knitting,
Sally puts all the pictures up on her blog, and
Betsy flirts a bit too much.
Mary with the nickname
Polly might be historically more established than
Susannah with the nn
Sally, but to me it's just as pointless. Name her
Polly and be done with it.