Ramona is the most perfect sister for Felicity!!
I voted for [name_f]Helena[/name_f], [name_f]Blythe[/name_f] and [name_f]Naomi[/name_f], but I think [name_f]Ramona[/name_f] and [name_f]Bridget[/name_f] also work well!
I particularly like the happy meanings connection between [name_f]Felicity[/name_f] and [name_f]Blythe[/name_f].
I LOVE [name_f]Blythe[/name_f]! It has been a GP of mine for years! I would love to meet a little named [name_f]Blythe[/name_f] and I think [name_f]Felicity[/name_f] and [name_f]Blythe[/name_f] sound so adorable as sisters. I really love virtue name, but if you are having doubts about [name_f]Blythe[/name_f] some other great virtue type names that would go well with big sister [name_f]Felicity[/name_f] are: [name_f]Bonnie[/name_f], [name_f]Charity[/name_f], [name_f]Patience[/name_f], [name_u]Hero[/name_u], [name_f]Victoria[/name_f], [name_f]Constance[/name_f], [name_f]Temperance[/name_f], or [name_f]Amity[/name_f] (nn Amy). Best of luck to you! [name_u]Happy[/name_u] Naming!
I think [name_f]Helena[/name_f] and [name_f]Felicity[/name_f] are a pair MADE for each other… stylistically they’re perfect. I just don’t love the idea of them together? Still, I voted for her because I love [name_f]Helena[/name_f] in general and [name_f]Felicity[/name_f] in general and stylistically they’re perfect together.
I also LOVE [name_f]Felicity[/name_f] and [name_f]Sybil[/name_f] together; that one definitely got my vote, and I love the idea of [name_f]Felicity[/name_f] and [name_f]Blythe[/name_f] as sisters too!
I also like [name_f]Felicity[/name_f] and [name_f]Ramona[/name_f] theoretically but they do seem quite different to me?
[name_f]Felicity[/name_f] and [name_f]Mira[/name_f] would have been my true favorite–I love them together!–but [name_f]Felicity[/name_f] and [name_f]Mirabel[/name_f] and [name_f]Felicity[/name_f] and [name_f]Miriam[/name_f] didn’t wow me quite so much.
Then again, I prefer [name_f]Mira[/name_f] as a standalone compared to all the other [name_f]Miri[/name_f] options out there.
Good luck!
I love [name_f]Mirabel[/name_f] or [name_f]Helena[/name_f] with [name_f]Felicity[/name_f]! [name_f]Blythe[/name_f] is also really pretty 
I LOVE [name_f]Felicity[/name_f] and Blythe!! They are both vintage but such happy names. [name_f]My[/name_f] second choice was [name_f]Felicity[/name_f] and [name_f]Miriam[/name_f]. Followed by [name_f]Felicity[/name_f] and [name_f]Naomi[/name_f].
I chose [name_f]Blythe[/name_f], [name_f]Mirabel[/name_f], and [name_f]Sybil[/name_f].
[name_f]Blythe[/name_f] & [name_f]Felicity[/name_f] have been favorites of mine for a long time, likely because of my love of L.M. [name_u]Montgomery[/name_u] books. I also have a soft spot for names meaning anything related to happy or happiness.
[name_f]Mirabel[/name_f] is feminine like [name_f]Felicity[/name_f] and in that lovely spot of being recognizable but not overly used. It also has the benefit of the nn [name_f]Miri[/name_f], but with a much different image than [name_f]Miriam[/name_f].
[name_f]Sybil[/name_f] has grown on me, probably as a result of Downton [name_u]Abbey[/name_u], especially with the younger [name_f]Sybil[/name_f] being called “Sybbie.” That’s so sweet! Both [name_f]Felicity[/name_f] and [name_f]Sybil[/name_f] have that vintage-yet-modern feel.