I really like [name_f]Sable[/name_f] and [name_f]Theodora[/name_f]!
Similar alternatives you might like are [name_f]Sayla[/name_f] or [name_f]Sabine[/name_f] and [name_f]Theodosia[/name_f] or [name_f]Dorothea[/name_f]
I also think the nickname of Teddie/Teddy is cute.
Alternative to [name_f]Odessa[/name_f]: [name_f]Odette[/name_f], [name_f]Odelia[/name_f], [name_f]Ophelia[/name_f], [name_f]Iridessa[/name_f]
More ideas that i think are 'pretty but unique, not too out there':
[name_f]Avalon[/name_f], [name_f]Amity[/name_f], [name_f]Aurelia[/name_f], [name_f]Aviva[/name_f], [name_f]Anthea[/name_f], [name_f]Annalise[/name_f], [name_f]Acadia[/name_f], [name_f]Aveline[/name_f], [name_f]Blythe[/name_f], [name_f]Briony[/name_f], [name_f]Bronwyn[/name_f], Banksia, [name_f]Calluna[/name_f], [name_f]Cerise[/name_f], [name_f]Clarisse[/name_f], [name_f]Cassia[/name_f], [name_m]Caleo[/name_m], [name_f]Dahlia[/name_f], [name_f]Elara[/name_f], [name_f]Elora[/name_f], [name_f]Evelina[/name_f], [name_f]Isolde[/name_f], [name_f]Ines[/name_f], [name_m]Kaida[/name_m], [name_f]Lenore[/name_f], [name_f]Linnea[/name_f], [name_f]Luella[/name_f], [name_f]Mavis[/name_f], [name_f]Melrose[/name_f], [name_f]Marigold[/name_f], [name_f]Magnolia[/name_f], [name_f]Nadine[/name_f], [name_f]Nerissa[/name_f], [name_f]Ottilie[/name_f], [name_f]Primrose[/name_f], [name_f]Phryne[/name_f], [name_f]Reina[/name_f], [name_f]Rosemary[/name_f], [name_f]Saskia[/name_f], [name_f]Simone[/name_f], [name_f]Sylvie[/name_f], [name_f]Seraphina[/name_f], [name_f]Talitha[/name_f], [name_f]Twila[/name_f], [name_f]Valerie[/name_f], [name_f]Vienna[/name_f], [name_f]Winola[/name_f], [name_f]Winona[/name_f], [name_f]Xanthe[/name_f], [name_f]Yvette[/name_f], [name_f]Zaria[/name_f], [name_f]Zinnia[/name_f], [name_f]Zosia[/name_f]