What is Imogen's sister called?

[BrightestAndBest]

Currently lacking inspiration. Quite like Francesca or Nancy. Has to work with the surname Lee.

I really like Francesca. Not keen on Nancy.

I know Imogens with sisters called Natasha, Madeleine and Laura.

Other ideas:
Alexis, Alexandra, Amber, Abigail, Charlotte, Caitlyn, Erin, Florence, Georgina, Hannah, Harriet, Jessica, Joanna, Jasmine, Kathryn, Miranda, Matilda, Melissa, Miriam, Olivia, Philippa, Rebecca, Rhiannon, Rachel, Saffron, Tabitha, Tamsin, Victoria, Vanessa, Violet, Yasmin, Zara.

I know an Imogen and a Florence

Mia.
Margot.

Harriet and Philippa are possibilities (not sure about Pippa Lee though - does that sound odd)?

Definitely can't go with Mia (Mia Lee sounds too much like 'merely')

Amelia, but this isn't going to work with Lee.

I like Francesca too. How about Corinna, Fiona, Tamara, Kerenza or Meredith?

I really like Meredith. Do you think the nn Merry is inevitable though? Merry Lee (merrily) isn't great. Gah - Lee is such a difficult surname!

I know Imogens with siblings called Harriet, Tabitha, Caroline.

Anya
Cassandra
Elspeth
Frances
Jacintha (Jassy)
Jemima
Jessamy / Jessamyn /Jessamine
Keziah
Rowena
Sasha
Saskia
Verity

Freya

I know an Imogen with a sister Nadine.

Lois

Antonia

Kate

Evelyn
Martha
Saskia
Josephine
Beatrice or Beatrix
Felicity
Eliza or Elizabeth
Esther
Juliet
Julianna
Greta

I know an Imogen and Darcey.

I know 3 Imogens
Imogen & Iris
Imogen & Olivia
Imogen & Abigail

Felicity

I know an Imogen with a sister called Rebecca.

I know an Imogen and Aurelia

Lizzie

Judith

Imy and Jude

I know an Imogen and Anya. But Anya Lee (annually) is not good!

Elizabeth/Lizzie Lee is a great name.

I like Judith with the nn Jude.

Won't be using Elizabeth (MILs name).

What do you all think of Sadie?

Miranda? Isabelle? Cordelia?