Character 1: [name_f]Delilah[/name_f], nn [name_f]Lila[/name_f]. [name_f]Lola[/name_f] fits too, but I feel like it is a bit cliché for and overtly sexy, young, female character (à la [name_f]Lolita[/name_f]). Good choices though.
Character 2: [name_f]Beatrice[/name_f] nn [name_f]Bee[/name_f] (the [name_f]Bee[/name_f] spelling fits in especially nicely with a naive, innocent character). This seems to fit your description very nicely.
Suggestions:
C1: [name_f]Elena[/name_f] (nn [name_u]Lane[/name_u]), [name_f]Anastasia[/name_f] (nn Sia or [name_f]Stasia[/name_f]), [name_f]Tatiana[/name_f] (nn [name_f]Tia[/name_f]), [name_u]Ruby[/name_u], [name_u]Juniper[/name_u], [name_f]Leila[/name_f] / [name_f]Laila[/name_f] / [name_f]Layla[/name_f], [name_f]Katya[/name_f] (nn [name_f]Kitty[/name_f] or [name_f]Cat[/name_f]), [name_f]Kerensa[/name_f], [name_f]Demelza[/name_f], [name_f]Kelila[/name_f], [name_f]Keziah[/name_f] / [name_f]Kezia[/name_f], [name_f]Lila[/name_f], [name_f]Ella[/name_f], [name_f]Tallulah[/name_f], [name_u]Finlay[/name_u], [name_f]Camilla[/name_f] (nn [name_f]Cammie[/name_f] or Mill), [name_f]Lucy[/name_f], [name_f]Ariana[/name_f], [name_f]Poppy[/name_f], [name_f]Sophia[/name_f] / [name_f]Sophie[/name_f], [name_f]Malia[/name_f], [name_f]Marina[/name_f], [name_f]Alyssa[/name_f], [name_f]Miranda[/name_f], [name_f]Natalia[/name_f], [name_f]Eva[/name_f], [name_f]Ava[/name_f], [name_f]Audrey[/name_f], [name_u]Nicola[/name_u], [name_f]Milla[/name_f], [name_f]Odessa[/name_f], [name_f]Oriana[/name_f], [name_f]Kara[/name_f], [name_f]Marini[/name_f], [name_u]Quinn[/name_u], [name_f]Bella[/name_f] / [name_f]Belle[/name_f], [name_f]Gabriella[/name_f], [name_f]Raphaela[/name_f], [name_f]Calista[/name_f], [name_f]Avalon[/name_f].
C2: [name_f]Harriet[/name_f] (nn [name_f]Hattie[/name_f]), [name_f]Amabel[/name_f] (nn [name_f]Ama[/name_f] or [name_f]Mab[/name_f]), [name_u]Bellamy[/name_u], [name_f]Phoebe[/name_f], [name_f]Opal[/name_f], [name_f]Lavender[/name_f], [name_u]Padget[/name_u], [name_f]Annabelle[/name_f], [name_f]Annalie[/name_f], [name_f]Anouk[/name_f], [name_f]Olive[/name_f], [name_f]Agnes[/name_f] (nn [name_f]Aggie[/name_f]), [name_f]Iris[/name_f], [name_f]Lillian[/name_f] (nn [name_f]Lil[/name_f]), [name_u]Laurence[/name_u] (nn [name_u]Renny[/name_u]), [name_f]Hazel[/name_f], [name_u]Hadley[/name_u], [name_f]Francesca[/name_f] (nn [name_u]Frankie[/name_u]), [name_u]Flannery[/name_u], [name_f]Florence[/name_f] (nn [name_f]Flor[/name_f] or [name_f]Flo[/name_f] or [name_u]Renny[/name_u]), [name_f]Amity[/name_f], [name_f]Aphra[/name_f], [name_f]Adeline[/name_f], [name_u]Valentine[/name_u], [name_f]Georgia[/name_f] (nn [name_m]George[/name_m]), [name_f]Claudie[/name_f], [name_f]Briar[/name_f], [name_f]Bronte[/name_f], [name_f]Esther[/name_f], [name_f]Beatrix[/name_f], [name_f]Hestia[/name_f], [name_f]Ivy[/name_f], [name_f]Mae[/name_f] / [name_f]May[/name_f], [name_f]Rosemary[/name_f], [name_f]Clara[/name_f], [name_f]Edith[/name_f] (nn [name_f]Edie[/name_f]), [name_f]Eloise[/name_f].
[name_f]Hope[/name_f] that’s helped :).