I'm going to go preference by letter, and suggest names by letter as well.
I'll suggest middles also.
Abigail |Alice | Anastasia | Anna
Love love love Anastasia, and Abigail is a very close second. Anastasia Kate would be lovely, sounds like a princess! ~ Adelaide, Adella, Alexandria, Alexis, Andromeda, Amity, Aimee, Alora, Annika, Augusta, Anais, Annie, Abbey, Addison, Aphrodite, Artemis, Athena, Amara, Angelica, Angelique, Angeline.
Caroline | Cassandra | Cecilia | Charlotte | Claire/Clara | Cordelia
Definitely a tie between Cassandra and Cordelia, either would work perfectly. Cassandra Grace or Cordelia Grace would be darling. ~ Carolina, Charity, Charisma, Calla, Carlotta, Chiara, Callista, Calliope, Casey, Clio, Cleopatra, Chloe, Clara, Cherise, Cassidy, Carmen, Connie, Calyx, California, Christabel.
Daisy
Very cute! I actually think Diana would be better with this sibset, but because it's a middle I have to go with Daisy. A long middle name would be perfect with Daisy: what about Daisy Madeline? ~ Delaney, Della, Delilah, Darby, Darcy, Dawn, Dahlia, Donna, Darla.
Eleanor | Elizabeth
I definitely prefer Eleanor. What about Eleanor Marie? ~ Emory, Emmeline, Elspeth, Emily, Elle, Evangeline.
Hadley | Hazel
Definitely Hazel, it's a very pretty name! What about Hazel Rebecca? ~ Hosanna, Holly, Hallie, Hannah, Henrietta, Honey, Harley, Hester.
Irene | Isla | Ivy
Although I love all three names, I vote for Irene. Irene is so classic and definitely not used enough! What about Irene Juliet? ~ Isobel, Isabeau, Ireland, Ivanna, Ianthe, Iona.
Jane | Jillian | Josephine | Julianne
Oh man, I love Jane, Jillian, AND Josephine! But, to go with the other names I've chosen so far, I say Jillian is the winner. Jillian Lucy would be very lovely! ~ Jacqueline, Jessica, Jade, Jennifer, Jodie, Josie, Jasmine, Jazzle, Johannah, Jubilee, Janelle, Janessa.
Katherine | Kathleen
Definitely Kathleen! Kathleen Beatrice would be beautiful. ~ Kristen, Kiersten, Kelly, Kelsey, Karly.
Laura | Lillian | Louisa | Lucia
Though I adore Lillian, I think Lucia goes best with the other names. What about Lucia Elizabeth? ~ Lenore, Lena, Laura, Lisette, Lydia, Lila, Lily, Leona, Leora, Lacey, Lux.
Maeve | Maisie | Margaret | May/Mae
Maeve really is lovely! What about Maeve Yasmine? ~ Molly, Matilda, Monroe, Melissa, Myra, Mila, Millicent, Marina, Morgan, Megan, Minnie, Mina, Marley, Missy, Mindy.
Nora/Norah
I prefer the spelling Nora. Nora Louise would be a wonderful combo. ~ Nancy, Narcissa, Nell, Nyx, Natalie, Natalia, Nina.
Penelope
I adore this name! Penelope Anne would be beautiful. ~ Persephone, Polly, Priscilla, Primrose, Peony, Posey.
Rachel | Rose
Rose is so cute. What about Rose Arabella? ~ Ronelle, Rachelle, Raquel, Regan, Remington, Remy, Regina, Rosalie, Rosalind, Rosemary, Renata.
Sadie | Scarlett | Serena | Sophie
Serena is very pretty! Serena May would be gorgeous. (: ~ Serendipity, Seraphina, Sephira, Sapphira, Sapphire, Sedona, Sienna, Sierra, Shay, Sonnet, Soleil, Sidney.
Victoria | Violet | Vivienne
Although I think Vivienne is pretty, I like Violet the most. What about Violet Emma? ~ Vienna, Viola, Violetta, Verity, Vera, Veronica.