I do think from your description that it seems like [name_f]Lark[/name_f] [name_f]Rosalie[/name_f] has your heart [name_f][/name_f]- and I can see why, it’s SO pretty. Have you considered [name_f]Briallen[/name_f] [name_f]Rosalie[/name_f]?
[name_f][/name_f]Throwing in some other options for [name_f]Birdie[/name_f] as a nickname, though I’m sure you’ve considered some of them: [name_f]Elizabeth[/name_f], [name_f]Betty[/name_f], [name_f]Tabitha[/name_f], [name_f]Aderyn[/name_f], [name_f]Dove[/name_f], [name_f]Skylark[/name_f], [name_f]Starling[/name_f], [name_m]Wren[/name_m]