I second [name_f]Astraea[/name_f], or her alternate spelling [name_f]Astraia[/name_f]!
[name_f]Andromeda[/name_f] - [name_f]Anne[/name_f], [name_f]Annie[/name_f], [name_f]Anna[/name_f], [name_f]Andi[/name_f], [name_u]Roma[/name_u], [name_u]Romy[/name_u], [name_f]Meda[/name_f], Dreama (?)
[name_f]Cassiopeia[/name_f] - [name_u]Cass[/name_u], [name_f]Cassi[/name_f], [name_f]Sia[/name_f], Opi, [name_f]Sia[/name_f]
[name_f]Seraphina[/name_f] - [name_f]Sera[/name_f], [name_m]Seraph[/name_m], Phina
[name_f]Constantina[/name_f] - [name_u]Connie[/name_u], [name_f]Tina[/name_f], [name_f]Constance[/name_f]
[name_f]Alessandrina[/name_f] - [name_m]Al[/name_m], [name_u]Allie[/name_u], Aless, [name_f]Alessa[/name_f], [name_u]Sandy[/name_u], [name_f]Sandra[/name_f], [name_f]Drina[/name_f], [name_f]Rina[/name_f]
[name_f]Amarantha[/name_f] - [name_f]Amy[/name_f], [name_f]Ama[/name_f], [name_f]Mara[/name_f], [name_f]Antha[/name_f] ----- This means ‘unfading’, which is rather fitting for royalty in hiding
Xanthippe (zan-thip-ee) - [name_m]Xan[/name_m], [name_f]Anne[/name_f], Thip, Thippe
[name_f]Sapphira[/name_f] - Sapphy, Sapph, Phira
Dellaphine / Dellaphina - [name_f]Della[/name_f], [name_f]Ella[/name_f], Phina
[name_f]Sophronia[/name_f] - [name_f]Sophie[/name_f], [name_u]Ronnie[/name_u], Oni, [name_f]Nia[/name_f]
[name_u]Artemis[/name_u] / [name_f]Artemisia[/name_f] - [name_m]Art[/name_m], [name_m]Artie[/name_m], [name_u]Ari[/name_u], [name_f]Emi[/name_f], [name_f]Sia[/name_f]
[name_f]Amandine[/name_f] - [name_f]Amy[/name_f], [name_f]Ama[/name_f], [name_f]Amanda[/name_f], [name_f]Andi[/name_f], [name_f]Dina[/name_f]
[name_f]Hildegarde[/name_f] - [name_f]Hilde[/name_f], [name_m]Hill[/name_m], Dega
[name_f]Galatea[/name_f] / [name_f]Galathea[/name_f] - [name_u]Gal[/name_u], [name_f]Gala[/name_f], [name_f]Ala[/name_f], [name_f]Thea[/name_f]
[name_f]Jessamine[/name_f] - [name_u]Jess[/name_u], [name_f]Jessa[/name_f], [name_u]Sam[/name_u], [name_u]Sami[/name_u], [name_f]Mina[/name_f]
[name_f]Wilhelmina[/name_f] - [name_f]Willa[/name_f], [name_f]Wilma[/name_f], [name_f]Mina[/name_f]
[name_f]Esmeralda[/name_f] - [name_f]Esme[/name_f], [name_f]Merry[/name_f], [name_f]Alda[/name_f]
[name_f]Evangeline[/name_f] / [name_f]Evangelina[/name_f] - [name_f]Eve[/name_f], [name_f]Evie[/name_f], [name_u]Evan[/name_u], [name_u]Angel[/name_u], [name_f]Elin[/name_f] / [name_f]Eline[/name_f], [name_f]Lina[/name_f]
[name_f]Valentina[/name_f] - [name_f]Valen[/name_f], [name_u]Ali[/name_u], [name_f]Tina[/name_f], [name_u]Val[/name_u]
[name_f]Natalia[/name_f] / [name_f]Nathalia[/name_f] - [name_u]Nat[/name_u], Nats, [name_f]Nell[/name_f], [name_u]Ali[/name_u], [name_u]Tali[/name_u] / [name_f]Thalie[/name_f], [name_f]Lia[/name_f]
[name_f]Theodosia[/name_f] - [name_u]Theo[/name_u], [name_f]Thea[/name_f]
[name_f]Zoraida[/name_f] - [name_f]Zora[/name_f], [name_f]Zoe[/name_f], [name_f]Ora[/name_f], Raida, [name_f]Aida[/name_f]
[name_f]Yevgenia[/name_f] / [name_f]Eugenia[/name_f] - [name_f]Geni[/name_f], [name_f]Genia[/name_f] -------------- this means “Well born”
[name_f]Tuilelaith[/name_f] - [name_f]Tu[/name_f], Tuile
[name_f]Iphigenia[/name_f] - Iphi, [name_f]Genia[/name_f] ------- this means “Of royal birth”
[name_f]Valeriana[/name_f] - [name_u]Val[/name_u], [name_f]Valeri[/name_f], [name_f]Riana[/name_f], [name_f]Ana[/name_f]
[name_f]Desdemona[/name_f] - [name_u]Desi[/name_u], [name_f]Demi[/name_f], [name_f]Mona[/name_f]
[name_f]Jacquenetta[/name_f] - [name_m]Jac[/name_m], [name_f]Jacqui[/name_f], [name_f]Netta[/name_f], [name_f]Etta[/name_f]
[name_f]Rosalia[/name_f] - [name_f]Rose[/name_f], [name_f]Rosa[/name_f], [name_f]Sally[/name_f], [name_u]Ali[/name_u], [name_f]Alia[/name_f], [name_f]Lia[/name_f]
[name_f]Dulcinea[/name_f] - [name_f]Dulcie[/name_f], [name_f]Nea[/name_f]
Zephyrina - [name_u]Zephyr[/name_u], [name_f]Rina[/name_f], Zeph
[name_f]Athenais[/name_f] - Athen, [name_f]Anais[/name_f]
[name_f]Tatiana[/name_f] / [name_f]Tatiyanna[/name_f] - [name_f]Tati[/name_f], [name_f]Tia[/name_f], [name_f]Ana[/name_f], [name_f]Tasha[/name_f]
Or look into some flower names, they usually sound very long and formal, and fantasy-esque.
Alstroemeria (the name of my favourite flower, commonly ‘peruvian lily’) - [name_u]Ali[/name_u], Meria, [name_f]Merry[/name_f] / [name_f]Merri[/name_f], [name_u]Merritt[/name_u]
Alchemilla - [name_u]Allie[/name_u], [name_f]Emilla[/name_f], [name_f]Milla[/name_f]
Astrantia - Astor, [name_f]Astra[/name_f], [name_f]Astrid[/name_f], [name_f]Tia[/name_f]
Chrysanthumum - [name_f]Chrys[/name_f], [name_f]Chryssa[/name_f], [name_u]Sandy[/name_u]
Echinacea - [name_u]Echo[/name_u], Cea
Asteraceae - Astor, [name_f]Asta[/name_f], [name_f]Astra[/name_f], Ceae
Myrcinaceae - [name_f]Myra[/name_f], Myrca, Cina, Ceae
Delphinium - [name_u]Dell[/name_u], [name_f]Delphi[/name_f], [name_f]Delphine[/name_f]
Nemesia - [name_f]Nema[/name_f], Nem, Mesi, Mesia
Nymphea - Nym, Nymph, Phea
Passiflora - Passi, [name_f]Flora[/name_f], [name_f]Lora[/name_f]
Coronaria - [name_f]Cora[/name_f], Nari, Naria, [name_f]Aria[/name_f]