If you and your husband like [name_f]Beatrix[/name_f], then I’d go with it! I think [name_f]Madeline[/name_f] or [name_f]Jasmin[/name_f] work really well!
other names:
[name_f]Beatrice[/name_f]
[name_f]Camille[/name_f]
[name_f]Rose[/name_f]
[name_f]Rosemary[/name_f]
[name_f]Rosalind[/name_f]
[name_f]Marguerite[/name_f]
[name_f]Lila[/name_f]
[name_f]Dahlia[/name_f]
Ooh thank you, I think [name_f]Rosalind[/name_f] is lovely bit I’m sure husband won’t go for it.
I really like [name_f]Jasmin[/name_f] or [name_f]Jasmine[/name_f]? With the nickname [name_f]Minnie[/name_f]? I think [name_f]Minnie[/name_f] is so cute. I just worry that it’s a really popular name and I come across loads but I’m not sure I hear it loads although I haven’t been looking out for it!
I also think if you both like Beatrix you should go for it, Beatrice is also a nice alternative. I also love Jasmine.
Some other ideas:
Clarice
Cressida
Elodie
Frederica
Francesca
Meredith
Miriam (could squeeze Minnie from this maybe?)
Naomi (same?)
Romilly (Millie as a nn?)
What about [name_f]Fauna[/name_f]? It’s very uncommon and is similar to [name_f]Florence[/name_f]. There’s also
[name_f]Emmeline[/name_f]
[name_f]Adeline[/name_f]
[name_f]Amelia[/name_f]
[name_f]Jacinta[/name_f]
[name_f]Beatrice[/name_f]
[name_f]Lilya[/name_f]
[name_f]Louisa[/name_f]
[name_f]Pearl[/name_f]
[name_u]June[/name_u]
[name_f]Alexandria[/name_f]
[name_f]Anastasia[/name_f]
[name_f]Tasmin[/name_f] ([name_f]Jasmin[/name_f] but less common)
[name_f]Elva[/name_f]
[name_f]Tiana[/name_f]
[name_f]Fay[/name_f] (I don’t know where you live but where I live it’s a normal name that’s not overly common but is a little common)
[name_f]Cosette[/name_f]
[name_f]Heidi[/name_f]
[name_f]Heddy[/name_f]
[name_f]Ada[/name_f]
[name_f]Amabel[/name_f]
[name_f]Fleur[/name_f]
[name_f]Colette[/name_f]
[name_f]Poppy[/name_f]
I love [name_f]Beatrix[/name_f] and [name_f]Madeline[/name_f]! If you both agree with [name_f]Beatrix[/name_f], I would choose that. Forget the rest of family’s opinions. You will never please them all.
My favorites to go with big brohters [name_m]Samuel[/name_m] and [name_m]Theodore[/name_m] are [name_f]Beatrice[/name_f], [name_f]Madeline[/name_f] and [name_f]Florence[/name_f].
[name_f]Beatrice[/name_f] sounds better with your sibset.
[name_f]Madeline[/name_f] is a beautiful name. In the US, [name_f]Maddie[/name_f] is a very popular nickname for girls named [name_f]Maddison[/name_f], [name_f]Madeline[/name_f] and [name_f]Madelyn[/name_f]. I still love this name though and would consider.
[name_f]Florence[/name_f] is the most intriguing of the names you’ve listed. Can you get past the pet issue?
My LO is 18 months and her name is [name_f]Lyra[/name_f] [name_f]Penelope[/name_f] [name_f]Rosa[/name_f]
[name_f]Lyra[/name_f] was because we loved it and her two middle names are her grandmothers
I like the fact that [name_f]Lyra[/name_f] can’t be shortened ”
My LO is 18 months and her name is [name_f]Lyra[/name_f] [name_f]Penelope[/name_f] [name_f]Rosa[/name_f]
[name_f]Lyra[/name_f] was because we loved it and her two middle names are her grandmothers
I like the fact that [name_f]Lyra[/name_f] can’t be shortened 
I want something that goes with the boys names, that will take her just fine into adult hood so I guess nothing too twee and maybe more traditional. here are my thoughts…
.