Leaning towards [name_f]Leonie[/name_f] [name_f]Danielle[/name_f] for a girl.
I really like the NN [name_m]Leo[/name_m]?
Thoughts?
I don’t see why not… I know a [name_f]Theodora[/name_f] called [name_u]Theo[/name_u]. I love feminine names with tomboy-ish nicknames. And she’ll always have [name_f]Leonie[/name_f] if she prefers it as she get older. [name_f]Leonie[/name_f] is so sweet!
I agree, and [name_f]Leonie[/name_f] [name_f]Danielle[/name_f] is a beautiful name.
[name_f]Leonie[/name_f] [name_f]Danielle[/name_f] is lovely, and [name_m]Leo[/name_m] could definitely work for a nickname!
[name_f]Leonie[/name_f] [name_f]Danielle[/name_f] is beautiful. [name_m]Leo[/name_m] works as a nickname. I would lean towards [name_u]Lee[/name_u], but you don’t have to have just one nickname!
[name_f]Leonie[/name_f] [name_f]Danielle[/name_f] is gorgeous! I adore [name_f]Leonie[/name_f]!
I think [name_m]Leo[/name_m] would be lovely 
I really like boyish nicknames on girls - [name_u]Rory[/name_u] for [name_f]Aurora[/name_f], [name_u]Ronnie[/name_u] for [name_f]Veronica[/name_f], [name_u]Stevie[/name_u] for [name_f]Stephanie[/name_f], etc. So yes, [name_m]Leo[/name_m] for [name_f]Leonie[/name_f] would be lovely!
I’ve been considering [name_f]Leonie[/name_f] nn [name_m]Leo[/name_m] myself lately as a possible sister to [name_f]Maxine[/name_f] nn [name_u]Max[/name_u]! I’ve been loving the vintage names with boyish nickname options - [name_f]Theodora[/name_f] nn [name_u]Teddy[/name_u] & [name_f]Penelope[/name_f] nn [name_m]Penn[/name_m] are others I love.