I've always loved the name Josephine. But then again, I think the most feminine names are feminine forms of male names. Like they don't need to have a purely feminine, girly name to exude femininity. Its kind of hard to explain.
I love J names, especially with interesting vowels after them (like Juno or Julia), and then I absolutely love -phine or -phina in names. I'm a -ph freak.
Its beautiful and can easily be translated all throughout life, with a variety of nicknames (Jo, Josie, Joey, Joy, Sephie, Seph, Phina, etc.) I also think it goes well with Georgia or Genevieve as siblings.
Also, I think its charming to connect family names to a child, especially with Joseph as being your husband's middle name. I especially love it when people bring out their creativity and take a Father to Daughter, or Mother to Son name crossover. (Like Henry Joseph to Josephina Henriette, or Ashley Madison to Maddox Asher.)
I just love it! A musical name that has nice nns, I especially like Phina. I only know two Josephines, both over 45 so not overused but familiar to all, I think it would be lovely on a baby and little girl.
The only objection I know to it is my husband's comment that feminizations of the father's name sound like you wanted a boy (we were discussing my friend Nichola, daughter of Nicholas) but I don't agree.
My daughter is Josephine, named for my father, and of course I love it. I gets lots of positive feedback about her name.