What a beautiful list!
[name_f]Clara[/name_f] is my favorite, especially with the selected middle name. I consider it a timeless gem. It’s joyful, gentle, and elegant. I also love that [name_f]Clara[/name_f] is an international name, used in many different languages.
[name_f]Lucy[/name_f] would be my second choice. [name_f]Lucy[/name_f] [name_f]Lynn[/name_f] is adorable! [name_f]Lucy[/name_f] is a classic treasure.
[name_f]Willa[/name_f] is an amazing idea, but I don’t think it flows quite as well with the middle name as the other options.
That being said, [name_f]Maisie[/name_f] would be my third choice. A quick search will show you that [name_f]Maisie[/name_f] suits adults just as well as children. For example, the [name_f]English[/name_f] actress [name_f]Maisie[/name_f] [name_m]Williams[/name_m] or the singer [name_f]Maisie[/name_f] [name_m]Peters[/name_m]. I can also easily imagine a sweet grandmother named [name_f]Maisie[/name_f].
From your list, I would eliminate [name_f]Annie[/name_f]. Unfortunately, I’m not sure I love the way it flows with the middle name.