Which Sibset?

I’m having a bit of trouble deciding between which names to use in a Sibset for characters in a story I’m coding in an app. I’ve already started the story with sisters [name_u]Meredith[/name_u] and [name_f]Cynthia[/name_f], but I feel I don’t love those names as much anymore. Seeing as I’m not too far into coding yet, I thought I should restart and change their names.

I’m going to be using names I’ve loved for a while and are simple, because I feel they’ll stick with me longer. Please comment your favourite Sibset:

[name_f]Jane[/name_f] & [name_f]Isla[/name_f]
[name_f]Jane[/name_f] & [name_f]Eleanor[/name_f]
[name_f]Jane[/name_f] & [name_u]Clare[/name_u]
[name_f]Jane[/name_f] & [name_f]Charlotte[/name_f]
[name_f]Jane[/name_f] & [name_f]Maria[/name_f]

[name_f]Jane[/name_f] will be the main character, the older sister. The second name is the name of the younger sister. [name_f]Jane[/name_f] will be 19 and her sister will be 16. Sorry for the long post!!!

First of all I think the name [name_u]Meredith[/name_u] would fit but not with [name_f]Cynthia[/name_f].
I love [name_f]Isla[/name_f] but I don’t think it works well with [name_f]Jane[/name_f]. They just have such different feels.
[name_f]Charlotte[/name_f] would work nicely but then I would feel as if [name_f]Jane[/name_f] would look quite plain next to it.
My favourite combo is [name_f]Jane[/name_f] and [name_f]Eleanor[/name_f]. My second favourite would be [name_f]Jane[/name_f] and [name_f]Charlotte[/name_f] despite what I said before.
[name_f]Hope[/name_f] this helps and have fun writing!