I love Della its classic and sounds trendy, but isn't it. It's a favorite of mine. Willa is okay but not one of my favorites. It sounds 90's to me. Della could be a nickname for Adelaide, Adeline or Adele, which are all rising. I also think it's wonderful on its own. Willa could be a nickname for Wilhelmina. Both work fine on their own as well. Suggestions although I would use/love Della include:
Alma, Elka, Glinda, Lara, Lola, Lulu, Elsa, Gilda, Darla, Paula, Quilla, Velma, and Wilma. Also Matilda nn Tilda. Good Luck!
I like both, but prefer Della!
My grandma went by Della so I have a real soft spot for it!
Willa is my all-time favourite name. I love it! It's got an element of pretty, cute, kind, fun, bubbly, nature, and still somehow manages to be soft. It's perfect for anyone and everyone. Also, I would Chose Willa over Willow. Willow isn't as fun, creative and outgoing as Willa. Willow is much softer and screams quiet, shy, reserved. Willa can be anything. Della sounds like deli, but maybe that's just me.